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Python: Reusable Thread Class

by D4rkTrick

This article provides code for making a Thread reusable.

Discovering Python step by step - Using Python Queues - 03 - Detecting Queue Completion Properly

by daubrecq

How to detect queue completion from other threads properly when using Python queues.

Python 3 Code Generator Written in Python 3

by Bill_Hallahan

This is a Python 3.x code generation program that generates Python 3 programs.

Discovering Python Step by Step - Using Python Queues - 01 - Adding Elements to a Queue

by daubrecq

How to add elements to a queue in Python

Latest Articles

Python 3 Code Generator Written in Python 3

by Bill_Hallahan

This is a Python 3.x code generation program that generates Python 3 programs.

Discovering Python step by step - Using Python Queues - 03 - Detecting Queue Completion Properly

by daubrecq

How to detect queue completion from other threads properly when using Python queues.

Discovering Python Step by Step - Using Python Queues - 02 - Extracting Elements from a Queue. Also: Tasks

by daubrecq

How to extract elements from a queue in Python

Discovering Python Step by Step - Using Python Queues - 01 - Adding Elements to a Queue

by daubrecq

How to add elements to a queue in Python

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Python3.6

Write a program to convert meters and additional centimeters (not two separate distances! ) Into feet and inches (again, one distance). Python 3

15 Feb 2018 by OriginalGriff

We do not do your homework: it is set for a reason. It is there so that you think about what you have been told, and try to understand it. It is also there so that your tutor can identify areas where you are weak, and focus more attention on remedial action. Try it yourself, you may find it is...

Python: Reusable Thread Class

14 Dec 2018 by D4rkTrick

This article provides code for making a Thread reusable.

Discovering Python step by step - Using Python Queues - 03 - Detecting Queue Completion Properly

20 Oct 2020 by daubrecq

How to detect queue completion from other threads properly when using Python queues.

How to fix the problem

7 Jul 2020 by Richard MacCutchan

You declare your Circle constructor as def __init__(self,angle:float=180,**kwargs): but then try to pass values instead of keyword pairs. You need to call it by: Circle(5,x=11,y=22) And the same with your Rectangle. Although with so few...

How to sort nested tuples.

2 Sep 2020 by Sandeep Mewara

Using Bubble sort, it would be something like: def sortTuple(t): for i in range(0, len(t)): for j in range(0, len(t)-i-1): if (t[j][1] > t[j + 1][1]): #notice here, I have used index 1 to use price as the value ...

How to swap values in nested tuples

2 Sep 2020 by Richard MacCutchan

Try this: newlist=() list=(('CAKE', (748.0, '07-09-2020')), ('JELLY', (12.0, '07-09-2020')), ('CREAM', (244.0, '03-11-2020'))) for element in list: newitem = (element[0], (element[1][1], element[1][0])) newlist = newlist + newitem...

Given input 3 4 6 7 5 3 I need to print like this in Python

4 Aug 2021 by CPallini

To simplify your task, allocate a bidimensional matrix and assign the corresponding characters inside it. Then print the matrix to the console.

How do I fix my invalid syntax in Python 3?

20 Feb 2018 by Richard MacCutchan

That syntax is wrong in two ways. Firstly your text strings are not enclosed in quotes. And secondly you cannot set a function equal to some value. See 6. Modules — Python 3.4.8 documentation[^] for how to define and call functions correctly.

Finding problems when making a simple payroll program

22 Aug 2023 by OriginalGriff

The error message is telling you that there is no such element in the array you are assigning to:hours_worked[emp_count] = int(input('Hours >')) And that is because the array has no elements when you start:hours_worked = [] Instead of assuming...

Filling irregular polygon with given number of rectangle

10 Dec 2023 by Richard MacCutchan

This is a mathematical problem, and needs to be addresses as such. See Knapsack problem - Wikipedia[^]

How do I approach further in the following problem?

1 Sep 2017 by Richard MacCutchan

At a guess you need to go through the grade records and look up the student for each one. Using the letter grades you can get the numeric value, and add that to the student total. Once you have added all the grade values you can calculate the averages. You may find it useful to create a class to...

Beginner to coding, little help please

1 Feb 2018 by CPallini

Constructor is __init__ (note double underscores), not _init_

Why is this not returning anything?

20 May 2018 by OriginalGriff

Simple: X is not greater than or equal to 20. So the loop body is never executed. Try this: x = 20 while x >= 0: print(x) x -=2

I need some help with a pattern

25 Jul 2018 by Patrice T

So, you show no attempt to solve the problem yourself, you have no question, you just want us to do your HomeWork. HomeWork problems are simplified versions of the kind of problems you will have to solve in real life, their purpose is learning and practicing. We do not do your HomeWork....

I get an import ERROR when trying to import this module.

12 Dec 2018 by OriginalGriff

A simple google on the error message takes you right to the solution: cannot import name 'ascii_letters' - Google Search[^] The top link explains the problem and it's solution: Python requests module import error - Stack Overflow[^] If you get an error message you don;t understand, start by...

How to write a script to extract a name values of self.name called in a .py file

14 Jun 2019 by Patrice T

Try: import numpy as np h =open('profile_ll.py','r') h_contents = h.read() if h_contents.find('self.binspec') == 57: #line 57 has self.binspec f = open('binspec') for lines in f: print(lines) sck.send('PRIVMSG ' + chan + " " + lines) f.close() ...

How to replace all occurrence of a string in file except the first occurrence using Python?

11 Nov 2019 by Richard MacCutchan

There is no need to write the interim file, try: oldtext = open("BATCH_ROLLBACK.txt").read() oldtext = oldtext.replace('pyt_batch_id', '123456') newtext = oldtext.replace('123456', 'pyt_batch_id',1) f2 = open('NEWBATCH_ROLLBACK.txt', 'w') f2.write(newtext) f2.close()

Convert Python code to C++ code

1 Jan 2020 by Richard MacCutchan

1. Learn C++ 2. Write the application in C++. Sorry, but this site does not provide free coding or conversion services.

How do I print out the sum of all the digits of a given number using a recursive function

4 Feb 2020 by Patrice T

Another way to end the loop is: if n

Flask sqlalchemy returns integretyerror when I am trying to delete a row.

24 Feb 2020 by MadMyche

The problem you are experiencing looks to be caused by having a relationship between the 2 tables involved (share / attachment) and trying to delete an entry from the table with the PrimaryKey.DBAPI Errors IntegrityError Exception raised when...

How do I remove the following error?

3 Jun 2020 by CHill60

The value of aid that you are trying to insert into the table ACTOR already exists on that table, and the column has a UNIQUE constraint on it. Either remove the UNIQUE constraint (probably not the right solution) OR check for whether you should...

I cant run the program becasue of an error in the inehriting

19 Jun 2020 by Richard MacCutchan

This is the same issue as your previous question at Why the multilevel inheritance doest work ?[^]. You must pass the correct number of parameters to the super class, as clearly stated in the error message. If you do not understand how classes...

Please help me with the code below

25 Jun 2020 by Luc Pattyn

I suspect a typo in line label6=tkinter.Label(root, test='Selece Co', width=20) :)

How do I double the number in a list?

30 Oct 2020 by Richard MacCutchan

You are not doubling numbers, you are modifying strings of characters. The fact that they are digits is irrelevant. So all you need is something simple such as: s= ["110", "212", "39839", "ABC" ] index = 0 while index

Why codechef is showing runtime error in my code?

5 May 2021 by OriginalGriff

Because "40 30" is not an integer, so if you input it to start with you will get an error saying that: for _ in range(int(input())): If you enter it at your second input, then the split generates a list which isn't convertible directly to an...

My code is displaying right ans for sample input but codechef is displaying wrong answer and time limit exceed.

8 May 2021 by Patrice T

Quote: time limit exceed. This usually mean that your code is too simple minded and that is at the expense of runtime. Think of a multiplication x*y, you can add x, y times to a total, it works, but it is not efficient. You have the same kind of...

Even if I type no or something else it still prints it

13 Jun 2021 by Patrice T

i dont know what should i do any idea whats the issue? The issue is that you didn't read the documentation. It happen the programming languages are no plain english, you need to learn how to express what you want to do. This is not Python: if...

I am getting error to print sum of numbers from 0 to 5

4 Jul 2021 by CPallini

sum is undefined. Try def function(n): if n == 0: return 0 else: return n + function(n - 1) n = 5 print(function(n))

Trying to understand why this is the output

29 Jul 2021 by OriginalGriff

Python allows negative indexes to lists, with -1 being the last item, -2 the second to last, and so forth. So your code: my_list = [3, 1, -2] print(my_list[my_list[-1]]) Is the equivelant of: index = my_list[-1] print(my_list[index]) Since -1...

How to solve this error?

15 Oct 2021 by OriginalGriff

Read the error message: File "main_S3DIS.py", line 123, in spatially_regular_gen center_point = points[point_ind, :].reshape(1, -1) IndexError: index 319979 is out of bounds for axis 0 with size 47722 Your index value is way too big. We...

What to import to correct this? Using python3 in windows not on unix.

4 Nov 2021 by Richard MacCutchan

Assuming that you are using tkinter (which you omitted to mention), then you need the following: import tkinter as tk root = tk.Tk() You will most likely need to use the tk. prefix on all your controls also, as shown below: import tkinter...

To generate and print all binary numbers with decimal values from 1 to N in python.

20 Jan 2022 by M Imran Ansari

Try the following link: Python program to print the binary value of the numbers from 1 to N - GeeksforGeeks[^]

Python program to check special number or not.

21 Jan 2022 by Luc Pattyn

too much code. Some analysis will proof that, when using base 10, the two-digit number [ab] is a "special number" if and only if b is 9. start with: 10*a + b = a + b + a*b

Sort the unsorted elements and square the elements in it.

22 Feb 2022 by CPallini

Based on the requirements ("Sort the unsorted elements and square the elements in it"), the output you are getting is correct. If you really wish to obtain a sorted list of squares, then you have first to generate a list of squares and then sort...

Count the repeated words words.

25 Feb 2022 by OriginalGriff

Stop and think about what you are trying to do instead of trying to dive right into code. Yes, split it into separate words, but after that you need to work out which words are repeated exactly twice, and there is a trick to that: sorting. If...

What type do I convert an * so that multiplication is possible?

5 Apr 2022 by OriginalGriff

You don't, because you're mixing types and assuming that the result will be useful - it won't any more than adding two mobile phone numbers together produces a useful phone number. What you can do is convert the whole thing to a string and use...

How to prevent change columns name header when export SQL server table to excel for second time ?

24 Apr 2022 by CHill60

Quote: my issue done when change column name from studentname to Name on table students If you are changing the name of the column then obviously the header of the column will also change to match the name of the column. You are exporting the...

Build a calculator for Python 3

11 May 2022 by OriginalGriff

While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for...

Build a calculator for Python 3

11 May 2022 by Richard MacCutchan

See The Python Tutorial — Python 3.10.4 documentation[^]

Take indices of non zero elements of matrix

15 Jun 2022 by CPallini

Try the following code n=3 adjacency_matrix =[ [2, 3, 0] , [0, 0, 1] , [1, 5, 0] ] li_r = [] li_c = [] for i in range(n): for j in range(n): if adjacency_matrix[i][j]!=0: li_r.append(i) li_c.append(j) print(li_r) print(li_c) ...

Python3 - how to get list of names from namedtuple givn input

24 Aug 2022 by CPallini

Try n = int(input()) Tuple1 = namedtuple("Cols", input()) s = 0 Names = [] for i in range(n): sp = Tuple1(*input().split()) s += int(sp.MARKS) Names.append(sp.NAME) print(s) print(Names) print(s/n)

Python 3 Code Generator Written in Python 3

10 Nov 2022 by Bill_Hallahan

This is a Python 3.x code generation program that generates Python 3 programs.

How to make faster Python code

25 Jan 2023 by Richard Deeming

Your original code iterates over the list in the order of N+1 times - once to generate a set of unique values, and once for each unique value to count the number of occurrences. Your dictionary code also iterates over the list in the order of...

How does x=+1 print 1 as output .

15 Feb 2023 by Sandeep Mewara

Quote: Ques 1. x=+1 This will always be 1 as it's an assignment not an increment. If you do x+=1 without initializing, it will throw an error. Quote: Ques 2. output:4,12 This happened as during the compiler run, value of b was already defined...

How do I fix my invalid syntax in Python 3?

21 Feb 2018 by CPallini

Do you mean something similar to class function: def createtextfile(self, text): f = open('foo.txt','w') f.write(text) f.close() def addtext(self): f = open('foo.txt','a') something = input('what would you like to add? ') f.write(something)...

Given a number N, write a program to print an inverted hollow pyramid of 2 * N - 1 rows using numbers.

17 Apr 2023 by OriginalGriff

The reason it is not what you needed is that it's a solution to a different problem. You can't just find code on the internet and assume that it will do what you need to hand in, or that anyone else is going to force it to do what your teacher...

I have an error with gust, description, and time conversion and can't figure out how to fix it.

15 Nov 2023 by Maciej Los

Take a look at the content of response_json variable: {'coord': {'lon': -86.1772, 'lat': 39.7778}, 'weather': [{'id': 800, 'main': 'Clear', 'description': 'clear sky', 'icon': '01d'}], 'base': 'stations', 'main': {'temp': 63.86, 'feels_like':...

Can someone explain this to me completely?

11 Jan 2024 by Richard MacCutchan

This says print "Guess" to the console, and wait for input. When something is typed in, try to convert it to an integer value and store the value in the varaible named Guess. Guess = int(input("Guess") : This says add 1 to the variable named...

This is the broken code. I am trying to fix this can u please help me with this Python program

13 May 2021 by raddevus

==>> TypeError: 'int' object is not iterable – You are attempting for loop over the units object. for currentUnit in units Most likely the units object is not a collection and so it is failing.

How do I scrape the number of likes, views and comments from a post on the web.

N 6 May 2024 by Dave Kreskowiak

You may have better luck using the Facebook and Instagram API's instead of scraping. https://developers.facebook.com/docs/graph-api/[^] https://developers.facebook.com/docs/instagram/[^]

Which one is better append() or extend() or += in Python

4 Aug 2017 by Thomas Daniels

There is no "better", because they have different purposes: .append adds a single element to the list. .extend is like append but for multiple elements: it takes a list as argument. a += [3, 5] is short-hand for a = a + [3, 5] and this does the same as extend, but the difference is that the +...

Help me make this program

20 Aug 2017 by Richard MacCutchan

Start by counting the number of occurrences of each value. You also need some way to store this information, so look at the collection types that can keep two values together in this way: maybe a dictionary. Once you have that information you can find the minimum and maximum occurrences. And...

How to get out of the outer loop?

2 Oct 2017 by OriginalGriff

Refactor your code: move both loops into a function, and replace the break with a return.

Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.

14 Oct 2017 by OriginalGriff

What you are looking for is the largest product of two numbers in a list: which means multiplying each pair and comparing each against the previous maximum, not just printing each product. So try this: 1) Create a variable outside the loop, call it maxSoFar and set it to the product of the first...

Not able to call class function

17 Jan 2018 by Richard MacCutchan

Probably because your call to sys.exit() is not indented, so is not part of the exception handler, but executed immediately after the try/except block.

Why does it display blank instead of a string which I have given, in Python v.3?

27 Jan 2018 by Thomas Daniels

Both newjoke and the code in the while loop will ask "Did you find that funny?". So, what you see is the question getting repeated because after newjoke get called, you'll go back to the beginning of the while loop. This gives the impression of displaying a blank joke, but you just didn't hit...

Why is there an indent, in python3?

27 Jan 2018 by Thomas Daniels

print("\nWell what about this:\n\n",joke) print("a", "b") will print a b with a space in-between. That's what's happening here too: it prints the "What about this" with the newlines, then a space, then the joke. Try this instead: print("\nWell what about this:\n\n" + joke)

Python text based rpg problem, help please

1 Feb 2018 by CPallini

Quote: prof= "fighter" You probably meant self.prof = "fighter"

Write a program to convert meters and additional centimeters (not two separate distances! ) Into feet and inches (again, one distance). Python 3

16 Feb 2018 by Patrice T

In your code, you missed: Quote: 1. First, determine the total number of centimeters. And this matters because meters and centimeters and not exact multiples of inches and foot. Advice: Take a sheet of paper and a pencil, practice the conversion with examples until you master the algorithm....

Problem: Microsoft visual C++ 10.0 required, although VS 2017 is installed

23 Feb 2018 by RickZeeland

I think you need a Visual C++ redistributable, see explanation and downloads here: Microsoft Visual C++ Redistributable All Versions Direct Download Links[^] It is sadly necessary to have a lot of them installed, only the newest version is not enough !

How do I print the highest of an inputted value from an array, which has the same highest value? In Python

18 Mar 2018 by Richard MacCutchan

Your formatting leaves much to be desired. However, you can simplify things by checking the values as you go through the initial loop, like this: flavours = ["Vanilla", "Chocolate", "Mint Choc Chip", "Rosewater", "Strawberry", "Mango", "Frutti Tutti", "Fudge Brownie", "Bubblegum",...

Why aren't my modules recognized?

1 Apr 2018 by Member 13757541

I've been having a problem with installing packages in PyCharm. This started happening a few months ago, but before that it was fine. I can install it from the cmd using pip, but when I try to import it into the IDE it gives this error: ModuleNotFoundError: No module named '_winreg' and...

Python (basic code problem)

4 Apr 2018 by Patrice T

Try to replace print('n\Keys:',dict.keys() del dict[ 'name' ] with print('n\Keys:',dict.keys()) del dict[ 'name' ]

Is there anyone that can help find the error in my Python program

30 May 2018 by Patrice T

Quote: In my program, if I delete the return-1 statement I get the right answer but otherwise it keeps returning -1. Why does it keep doing so? Because with this code you get -1 if first letter is not an operator. Try def findNextOpr(txt): #txt must be a nonempty string. if...

I'm facinng an error while running the following Python 3.6 code in terminal....someone plzz help me.

31 May 2018 by Richard MacCutchan

dev1=Employee('Corey','Schafer...

How to check if a particular value in a list is equal to a value in another list using if statement?

7 Jun 2018 by Maciej Los

Member 13861803[^] wrote: but if statement dosent work. why is it? It's obvious! As Richard MacCutchan[^] mentioned in the comment to the question, there's no if statement in your code! Go back to basics: Python - Arrays[^] Python IF...ELIF...ELSE Statements[^]

How to check if a particular value in a list is equal to a value in another list using if statement?

7 Jun 2018 by CPallini

Have also a look at: Find Duplicate numbers in list | GeoNet[^].

How to create Python regex search to extract specific values from the server logs

14 Jun 2018 by Jochen Arndt

So you want to get the time stamp and the part at the end? While this can be done with regular expressions, it would be much simpler (and faster) with classic string operations. The time stamp is at the begin of the line with a fixed lenghth of 23 and the end part is after the last space in...

regular-expression

I need to write a Python program using only find() command in files to print all those line which has Python

4 Jul 2018 by CPallini

fhand=open('demo.txt') for line in fhand: line=line.rstrip() if( line.find('python') != -1): print(line)

I need to write a Python program using only find() command in files to print all those line which has Python

4 Jul 2018 by Richard MacCutchan

The find method returns the index to the first occurrence of the find target. You are only printing the ones where the index is zero. Change your loop to: for line in fhand: line=line.rstrip() if(line.find('python') != -1): print(line) In future please format your code properly...

How and from where I can learn Python language?

7 Jul 2018 by Patrice T

Quote: I want to learn python programming but don't know from where to start learning. What should i learn and from where can i get material to learn. 'learn python programming' covers 2 different things: learn Python as a new language and learn programming. It is the same difference as getting...

I need some help with a pattern

25 Jul 2018 by CPallini

It is very simple once you realize you have to choose the letter based on current distance from central letter, where the distance function is max (|x-L| , |y-L|) (Where L is the length of the string) Try def distance(x,y,l): return max( abs(x-l), abs(y-l)) s = "CODEPROJECT" l = len(s)...

How does this recursive function work?

15 Aug 2018 by OriginalGriff

Recursion is simple to understand: see "recursion" and it'll all be clear! Your function calls itself with different parameters, and return to itself with the value each time when it's calculated. Look at what happens with your code when you pass specific values: a == 2, b == 3 1) 2, 3 : b...

How do I solve this? Ill be greateful to whoever that helps me

17 Aug 2018 by Patrice T

So, you show no attempt to solve the problem yourself, you have no question, you just want us to do your HomeWork. HomeWork problems are simplified versions of the kind of problems you will have to solve in real life, their purpose is learning and practicing. Quote: I do not know how to...

The program is working when n=3 but not when is greater than 3

3 Sep 2018 by Richard MacCutchan

It is because your list contains strings and not integers. Sorting in string order, "19" will come before "3", etc.

Machine learning queries what is relation between ticker and value below and why am I getting index error

17 Sep 2018 by Richard MacCutchan

Stop using compound statements like this below. You cannot be certain (and we definitely cannot) what is the result at each part. Split it into discrete elements so you can see the results at each step. You can then display interim values and see where it is going wrong. value =...

How can I pass nested list, tuple, set and dictionary in Python using *args and **kargs in function?

11 Oct 2018 by Richard MacCutchan

It should be possible, see https://docs.python.org/3.4/tutorial/controlflow.html#keyword-arguments[^].

Python replace matching contents in a file

14 Nov 2018 by Richard MacCutchan

You are trying to replace the complete text of the second file that occurs in the first. But that text does not exist in the first file, only a part of it. You should read the second file line by line and try the replace on just the text of that line. Something like: import re newcontent:...

Is there a method in Python which can watch a text file for changes

15 Nov 2018 by Afzaal Ahmad Zeeshan

So basically you need a service that listens to the file updates. Python itself is merely a language, and does not know the runtime or OS features—debatable, yes, but let's spare the OP from such technical details please. That is why, none of the languages has this feature. C++, C#, Java, none....

How do I make it happen

15 Nov 2018 by OriginalGriff

That's not good - "18 years old" as an adult is not just a case of "year - x". See here: Working with Age: it's not the same as a TimeSpan![^] - it's C# based, so you can;t use it directly, but it's pretty simple stuff so you should be able to work out what to do in Python.

Why I am getting an error code in Python?

1 Dec 2018 by OriginalGriff

Because it won't automatically convert types. Try: print("I am " + str(character_age) + ",")

Erorr while I am modifying the strings

1 Dec 2018 by OriginalGriff

This is exactly the same problem you had last time: Why I am getting an error code in Python?[^] Heck, even the error message is the same, barting the type! So, predictably enough, the solution is the same as well: learning_subject = "Python" print("Learning " + str(learning_subject.isupper()))

Python - exit a text file reader if it exceeds a certain time limit

7 Dec 2018 by Richard MacCutchan

You need a timer that will interrupt your code, or a separate thread that can signal you when a number of seconds have elapsed. See threading — Thread-based parallelism — Python 3.7.1 documentation[^] and threading — Timer[^].

I am getting this value error?

9 Dec 2018 by Patrice T

It is all in the error message ! script, user_name = argv ValueError: not enough values to unpack (expected 2, got 1) The code want 2 values, but argv got only one.

File checker is not working?

7 Jan 2019 by Slacker007

I think regular expressions would help you here. Regular Expression HOWTO — Python 3.7.2 documentation[^]

Error in deploying the website to web server

10 Jan 2019 by MadMyche

Quote: remote: -----> Python app detected remote: ! Requested runtime (python-3.7) is not available for this stack (heroku-18). remote: ! Aborting. More info: https://devcenter.heroku.com/articles/python-support The messages explain it all; the version of Python you requested (3.7) is not...

No module named 'sklearn.cross_validation'

16 Jan 2019 by Member 14120258

For Sklearn 18 version import this: "from sklearn.cross_validation import KFold" For sklearn 20 import this: "from sklearn.model_selection import KFold"

I need you, r assitance in this code snippet?

25 Jan 2019 by CPallini

let is the current 'enumerated' item of the list (whereas i is the corresponding index). I think the best way for understanding such a code is by mental (pencil and paper are optional) execution: try to execute mentally the following code: l = ["a","b","c"] permute(l)

How do I return string that contains name of playing card using class?

9 Feb 2019 by OriginalGriff

This is fundamental to how classes (and OOPs generally) works, so it's important you understand this well. I'd strongly suggest you go back over the last couple of lectures and their notes (and chapters in any course book you are reading) because you seem to have missed all the important stuff. ...

How do I catch the error message if the user gives wrong input (without using isinstance)?

17 Feb 2019 by Bryian Tan

That case, you can update the code to check for type if not type(room) is int: to print out the exception, try import sys except: print("Unexpected error:", sys.exc_info()[0]) Example: CP_hotel | Pyfiddle[^] error handling - How to print an exception in Python? - Stack...

What does the """...""" in a function do?

7 Mar 2019 by Afzaal Ahmad Zeeshan

That is a question that includes 2 questions, one about the data type, and second the purpose of that placement. First of, as Solution 1 answers, that is a string definition. In Python, you are not restrained to use a single quote to create a string, you can use multiple ways and this triple...

How to fill lists with data in a loop depending on counter number

7 May 2019 by Christian Graus

elif i > 151: if i 151 && i

Pyrun_simplestring failing for special characters

9 May 2019 by Richard MacCutchan

Well I cannot believe that this works in 2 but not in 3. So, I just tried this again with Python 3.7 and it works perfectly. What I did notice, which was different from my tests yesterday, was the addition of the line #define PY_SSIZE_T_CLEAN before the include of Python.h, as described at...

How can I take image using distance sensor in raspberry pi3?

26 May 2019 by Richard MacCutchan

You are repeatedly requesting a system resource (the PiCamera) inside your while loop until the system has no more. Move the following line outside the loop: camera = PiCamera()

Creating self learning sentiment dictionary

24 Jul 2019 by Gerry Schmitz

Computers are still not "human". There is no "learning" without (initial) "training" (data) in the case of "artificial intelligence". Note the absence of "knowledge" in that phrase. We can train ourselves and gain knowledge; computers not so much. Without knowing cause and effect (i.e....

artificial-intelligence

machine-learning

Creating self learning sentiment dictionary

24 Jul 2019 by Afzaal Ahmad Zeeshan

Quote: the way to label it We can start here. Computer algorithms need enough data to perform their tasks. In machine learning, the learning tasks are categorized as supervised or unsupervised. In supervised learning you provide the data with independent and dependent variables; your input...

artificial-intelligence

machine-learning

How do I solve the indentation error in Python

13 Aug 2019 by Patrice T

Quote: I tried adjusting the spacing but I am getting the following error again and again. The problem is the number of spaces for i,row in train_df.iterrows(): # in this loop if row['Age']>0 and row['Age']

Code is ready and working, but GIT shows incorrect

8 Sep 2019 by Patrice T

Quote: Code is ready and working, but GIT shows incorrect as far as I can see, your usage of 3 spaces as indentation is perfectly legal, but Git want 4 spaces. "indentation is not a multiple of four"

coding-challenge

How do I convert decimals to binary and binary to decimals in Python without bin and int statements ?

11 Sep 2019 by Patrice T

Sure, I can just give you a full blowup solution, but I am not sure you will learn something. As it is very basic understanding of Python and programming, I think it is better to give you leads and a link to a good tutorial. # Because of print(dec_to_binary(145)) # -> 10010001 # and ...

How do I convert decimals to binary and binary to decimals in Python without bin and int statements ?

11 Sep 2019 by Richard MacCutchan

Try the following. You may need to modify some part of it to meet your own criteria, but it does the basics. def binary_to_dec(binary: str) -> int: """ Uses the ord() builtin to get the numeric value of a character Subtracting the ord('0') gets the integer value of the digit ...