common.py 文件源码

def thunk(input_str):
    ok_chars = string.letters + string.digits + "_"
    output_str = input_str
    for character in output_str:
        if not character in ok_chars:
            output_str = output_str.replace(character,"_")
    if output_str[0] in string.digits:
        output_str = "_" + output_str
    return output_str