Aren't strings immutable in Python , so how could we add charecters to the string word? (Result is popcorn)

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word = "pop"
for char in "corn":
    word += char
print(word)

What I have tried:

i tried to changing the strings

Posted 20-Sep-21 9:56am

Member 15331575

Updated 20-Sep-21 20:18pm

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k5054 · Accepted Answer · 2021-09-20T10:40:00

This works because variables are not immutable and the fragment word += char is equivalent to word = word + char, so rather than appending a character to the end of the variable, this creates a new string consisting of the value of the current value of word with thee new character appended to it, then assigns that value to the variable word

OriginalGriff · Accepted Answer · 2021-09-20T20:18:00

Python strings are immutable, which just means that once created they can't be changed, just like numbers.
If you have 6 apples and I have 6 oranges, then you eat an apple that doesn't mena I have 5 oranges left! :laugh:

Think about it:

Python

x = 666
x = x + 1
y = 666
print(x)
print(y)

You expect that to print 667 and 666 - because if it didn't, code would be a real problem!
How about this:

x = 666
y = x
x = x + 1
print(x)
print(y)

Again, you expect 667 and 666 because y holds a copy of the value in x not the "same value as x"

Strings do the same thing:

Python

x = '666'
y = x
x = x + '1'
print(x)
print(y)

Prints "6661" and "666" because the string is as immutable as a number: once created a string can't be changed, so any attempt creates a new string and returns that instead.

Make sense?

Aren't strings immutable in Python , so how could we add charecters to the string word? (Result is popcorn)

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