Python cookbook(字符串与文本)在字符串的开头或结尾处进行文本匹配操作

> filename='spam.txt'
> filename.endswith('.txt')
True
> filename.startswith('file:')
False
> url='http://www.python.org'
> url.startswith('htto:')
False
> url.startswith('http:')
True
> 

> import os
> os.getcwd()
'D:\\4autotests\\02script\\pythonbase'
> os.listdir()
['foo.py', 'hello.txt', 'Makefile', 'spam.c', 'spam.h', 'test1.py']
> filename=os.listdir()
> filename
['foo.py', 'hello.txt', 'Makefile', 'spam.c', 'spam.h', 'test1.py']
> [name for name in filename if name.endswith(('.c','.h'))]
['spam.c', 'spam.h']
> any(name.endswith('.py') for name in filename)
True

> os.getcwd()
'D:\\4autotests\\02script\\pythonbase'
> os.listdir()
['foo.py', 'hello.txt', 'Makefile', 'spam.c', 'spam.h', 'test1.py']
> if any(name.endswith(('.txt','.py')) for name in os.listdir(os.getcwd())):
  print('文件存在')
文件存在
>