xfileinput.py 文件源码

def t08():
    """??fileinput?????grep???"""
    import re
    pattern = re.compile(r'\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}')
    for line in fileinput.input('data.txt', backup='.bak', inplace=1):
        if pattern.search(line):
            print(fileinput.filename(), fileinput.filelineno(), line)