[Python] 跟檔案有關的常用函式

os.path.join('c' 'folder') # 'c\\folder'
os.path.join('c:' 'folder') # 'c:folder'

# Get file name.
os.path.basename('C:\\Windows\\123.txt') # '123.txt'

# Get file path and file extension.
filePath, fileExtension = os.path.splitext('C:\\Windows\\123.txt') # 'C:\\Windows\\123', '.txt'

# Get directory path.
os.path.dirname('C:\\Windows\\123.txt') # 'C:\\Windows'

# Get modify time from epoch time.
os.path.getmtime('C:') # 1409646173.7839031

# Traverse a directory.
for root, subdirs, files in os.walk("C:\\Pictures"):
  print root, subdirs, files 

[Python] How to get the last day of the month

想要知道某個特定月份有幾天，可以直接呼叫 calendar.monthrange(2014, 2)，

會回傳第一天是禮拜幾和該月有幾天。

範例:

import calendar
calendar.monthrange(2014, 2)
# (5, 28) # 禮拜六，28天
calendar.monthrange(2014, 3)
# (5, 31) # 禮拜六，31天
calendar.monthrange(2014, 4)
# (1, 30) # 禮拜二，30天