Python: Loop with list, use list value in directory

Question

Newbie in python, I have the following code:

XX = [A,B,C,D,E]
src_path = 'C:\love\hi_XX\you'

for file in src_path:
    Do something....

I want to loop through all files in C:\love\hi_A\you first, then C:\love\hi_B\you all the way to C:\love\hi_E\you.

I am using Spyder. How do I make this work? Thank you.

Looking for a way help to use for loop through all folders without repeat the 5 times for loop — Braveheart
– Braveheart, Commented Oct 11, 2016 at 18:43

AJNeufeld · Accepted Answer · 2016-10-11 18:55:21Z

2

You can create the src_path that you want by using a for loop against the elements in XX

for X in XX:
    src_path = r'C:\love\hi_' +X + r'\you'

Then, within that loop, you can use os.walk like in the other answer

import os
for root, dirs, files in os.walk(".", topdown=False):
    for name in files:
        print(os.path.join(root, name))
    for name in dirs:
        print(os.path.join(root, name))

edited Oct 11, 2016 at 18:55

AJNeufeld

8,7471 gold badge32 silver badges46 bronze badges

answered Oct 11, 2016 at 18:31

Mohammad Athar

1,9802 gold badges15 silver badges36 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Braveheart Over a year ago

Got error said A, B C... undefind name. Then I pgot error can't assign to literalut A= 'A', B = 'B'

Mohammad Athar Over a year ago

are you trying to say you can't enter the command A='A' ?

Braveheart Over a year ago

Got the solution from AJNewfeld

Oskar Skog · Accepted Answer · 2016-10-11 18:31:43Z

1

There's a function for that in the standard "os" module.

https://docs.python.org/2/library/os.html#os.walk

answered Oct 11, 2016 at 18:31

Oskar Skog

2411 gold badge5 silver badges16 bronze badges

1 Comment

Braveheart Over a year ago

Read through, but not applied in my case. Thanks

AJNeufeld · Accepted Answer · 2016-10-11 18:54:38Z

0

You need quotes around your literals in your array. And os.path.join is a always a good idea for joining together path components:

import os.path
XX = ["A", "B", "C", "D", "E"]
for X in XX:
    src_path = os.path.join(r'C:\love', "hi_"+X, "you")
    print(src_path)

C:\love\hi_A\you
C:\love\hi_B\you
C:\love\hi_C\you
C:\love\hi_D\you
C:\love\hi_E\you

Finally, if C:\love\hi_XX\you are directories, and you need files beneath them, then use os.walk on your src_path values.

answered Oct 11, 2016 at 18:54

AJNeufeld

8,7471 gold badge32 silver badges46 bronze badges

Collectives™ on Stack Overflow

Python: Loop with list, use list value in directory

3 Answers 3

3 Comments

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

3 Comments

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related