Python do not recognize variable under a for loop

Question

I am trying to loop through 20 newsgroup dataset, at the end i join all the files under a variable called file_path. However, i am getting the following error at the next line :

name 'file_path' is not defined

import os
for (root,dirs,files) in os.walk(my_directory):
    for special_file in files:
        if special_file.endswith(''):
            file_path = os.path.join(root, special_file)

What is my mistake? clearly i have defined file_path correctly.

most likely because the loop is never reaching file_path = os.path.join(root, special_file (is if special_file.endswith(''): your actual condition? That is always true for all strings). — juanpa.arrivillaga
– juanpa.arrivillaga, Commented May 13, 2020 at 5:31
I removed the not necessary loop but still the file_path is not recognized, for (root,dirs,files) in os.walk(my_directory): file_path = os.path.join(root, files) — CD_NS
– CD_NS, Commented May 13, 2020 at 5:41
what my_directory is assigned to and can you print full error message from console? — jits_on_moon
– jits_on_moon, Commented May 13, 2020 at 5:46
Sorry, my bad. Its the directory path, which was not correctly written. The code now runs. — CD_NS
– CD_NS, Commented May 13, 2020 at 5:59

po.pe · Accepted Answer · 2020-05-13 05:43:36Z

1

Using variables which are exclusively declared in a conditional statement is bad design. Define either a default file_path as fallback or don't use it outside of the conditional statement where it's defined.

answered May 13, 2020 at 5:43

po.pe

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