Python學習筆記：glob模塊（文件、路徑操作）

glob

sys.path[0] 獲得當前目錄
當前目錄爲：F:/PycharmProjects/NIP-keyword extraction 子目錄如下：

NlP-keyword子目錄爲：

glob支持 * ? [] 這三種通配符

1. *代表0個或多個字符
2. ?代表一個字符
3. [ ]匹配指定範圍內的字符，如[0-9]匹配數字

glob.iglob

iglob與glob類似，只是這裏返回值爲迭代器，對於大量文件時更爲省內存

import sys
from glob import glob,iglob
x = iglob(sys.path[0]+'/*/*.py')
print(x)

結果：

<generator object _iglob at 0x00000205A493C410>

##############################################################################################

import sys
from glob import glob,iglob
for x in iglob(sys.path[0]+'/*/*.py'):
    print(x)

結果

F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\crfsuite_model.py
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\evaluate.py
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\preprocessing.py
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\submit.py

glob.glob

得到的是一個list

import sys
from glob import glob,iglob

x = glob(sys.path[0]+'/*/*.py')
print(x)
print(type(x))

結果：

['F:\\PycharmProjects\\NIP-keyword extraction\\NIP-keyword\\crfsuite_model.py', 'F:\\PycharmProjects\\NIP-keyword extraction\\NIP-keyword\\evaluate.py', 'F:\\PycharmProjects\\NIP-keyword extraction\\NIP-keyword\\preprocessing.py', 'F:\\PycharmProjects\\NIP-keyword extraction\\NIP-keyword\\submit.py']
<class 'list'>

遍歷指定文件夾下所有文件或文件夾（不能遍歷文件夾中的文件）

import sys
from glob import glob
for x in glob(sys.path[0]+'/*'):
    print(x)

結果：

F:\PycharmProjects\NIP-keyword extraction\1.py
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword
F:\PycharmProjects\NIP-keyword extraction\tta_test.ipynb

遍歷指定文件夾下的所有文件夾裏的所有文件，/*/*可以根據文件夾層數自主設定

import sys
from glob import glob
for x in glob(sys.path[0]+'/*/*'):
    print(x)

結果：

F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\crfsuite_model.py
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\data
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\evaluate.py
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\main.ipynb
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\model
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\preprocessing.py
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\stroke
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\submit
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\submit.py
F:\PycharmProjects\NIP-keyword extraction\NIP-keyword\__pycache__