mhlib.py 文件源码

def pickline(file, key, casefold = 1):
    try:
        f = open(file, 'r')
    except IOError:
        return None
    pat = re.escape(key) + ':'
    prog = re.compile(pat, casefold and re.IGNORECASE)
    while 1:
        line = f.readline()
        if not line: break
        if prog.match(line):
            text = line[len(key)+1:]
            while 1:
                line = f.readline()
                if not line or not line[0].isspace():
                    break
                text = text + line
            return text.strip()
    return None