112-模拟字符串lstrip用法

whitesps = ' \r\n\v\f\t'

def rmlsps(astr):
    for i in range(len(astr)):
        if astr[i] not in whitesps:
            return astr[i:]
    else:  # 所有字符均为空，循环正常结束，返回空串
        return ''

if __name__ == '__main__':
    print(rmlsps('  \thello  '))