python regular expression to extract file_name from a given directory path

Question

I have some folders like-so:

../dog_breeds/images/Images/n02085620-Chihuahua
../dog_breeds/images/Images/n02085782-Japanese_spaniel
../dog_breeds/images/Images/n02086910-papillon
../dog_breeds/images/Images/n02088466-bloodhound
....
....

I want to extract only these info's(Chihuahua, Japanese_spaniel, papillon, bloodhound) from the paths of the files using Python. Can anybody help me ?

Rakesh · Accepted Answer · 2020-08-14 17:53:17Z

1

You can use str.split here

Ex:

s = """../dog_breeds/images/Images/n02085620-Chihuahua
../dog_breeds/images/Images/n02085782-Japanese_spaniel
../dog_breeds/images/Images/n02086910-papillon
../dog_breeds/images/Images/n02088466-bloodhound
"""

for p in s.splitlines():
    print(p.split("-")[-1])

If you need regex.

import re

for p in s.splitlines():
    print(re.search(r"\-(\w+)$", p).group(1))

Output:

Chihuahua
Japanese_spaniel
papillon
bloodhound

answered Aug 14, 2020 at 17:53

Rakesh

82.9k17 gold badges86 silver badges122 bronze badges

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

1 Comment

Ayushman Buragohain Over a year ago

Thanks I was actually looking for a regex solution.

Ahmet · Accepted Answer · 2020-08-14 17:28:16Z

There are two common factors.

Image folder paths are same
- For instance: all image starts with ../dog_breeds/images/Images/
- replace('../dog_breeds/images/Images/', '') for removing the paths
All images start with 10-character
- For instance: n02085620-, n02085782-
- replace('../dog_breeds/images/Images/', '')[10:] for removing the characters.

If we combine the two factors:

res = ['../dog_breeds/images/Images/n02085620-Chihuahua',
       '../dog_breeds/images/Images/n02085782-Japanese_spaniel',
       '../dog_breeds/images/Images/n02086910-papillon',
       '../dog_breeds/images/Images/n02088466-bloodhound']

part1 = [r.replace('../dog_breeds/images/Images/', '')[10:] for r in res]
print(part1)

Output is:

['Chihuahua', 'Japanese_spaniel', 'papillon', 'bloodhound']

Collectives™ on Stack Overflow

python regular expression to extract file_name from a given directory path

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related