How to create pandas CSV file into a docker volume?

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How can I modify the python code so that it creates the Book2.csv file into a directory of a Docker volume (myvol)?

What I have tried:

Python Code

Python

import pandas as pd
import numpy as np
from csv import writer
import time

for i in range(1000):
    num = np.random.normal()
    with open('Book2.csv' , 'a+', newline='') as fd:
        csv_writer = writer(fd)
        csv_writer.writerow([num])
        print(num)
    fd.close()
    time.sleep(10)

Dockerfile

FROM python

RUN pip install pandas

WORKDIR /mydata

COPY DataGen.py ./

CMD python DataGen.py

Posted 30-Apr-20 18:05pm

Member 14816525

Updated 1-May-20 1:04am

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Richard MacCutchan · Answer 1 · 2020-05-01T01:05:00

Solution 1

This is the same issue as Linking a container to a volume in docker[^], and I already gave you a suggestion to look in your system to find out where the file is being saved. If you want the file saved in a specific location then add the path to the file name in your code.

Posted 1-May-20 1:05am

Richard MacCutchan

Comments

Richard MacCutchan 1-May-20 12:14pm

Then you need to study the documentation.

Member 14816525 1-May-20 12:31pm

Okay I finally got it to work. But now the issue is when I run my second code to show me the result every 10 seconds, it doesn't show anything in real time. But it will show me all the results at once, after it has stopped. So how can I see the results?

Richard MacCutchan 1-May-20 12:51pm

Sorry, no idea. What is the other application doing?

Member 14816525 1-May-20 13:05pm

it's just showing the average of the all the random numbers being generated in the CSV file.

Member 14816525 1-May-20 17:27pm

Nvm, I got it to work. Thank you.