How to get file extension

How to get the file extension?

First analyze the problem:

#The file extension form is separated by "." after the file path, so we can use Python's string interception Select to get the file extension.

def get_file_extension(filename): arr = os.path.splitext(filename) return arr[len(arr) - 1] #return arr[len(arr) - 1].replace(".","") 可以将结果中的.去掉 print(get_file_extension("abc.jpg")) #返回 .jpg print(get_file_extension("2014.01.25.gif")) #返回 .gif

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