python字符串转驼峰

import re


def to_camel_case(x):
    """转驼峰法命名"""
    return re.sub('_([a-zA-Z])', lambda m: (m.group(1).upper()), x)


def to_upper_camel_case(x):
    """转大驼峰法命名"""
    s = re.sub('_([a-zA-Z])', lambda m: (m.group(1).upper()), x)
    return s[0].upper() + s[1:]


def to_lower_camel_case(x):
    """转小驼峰法命名"""
    s = re.sub('_([a-zA-Z])', lambda m: (m.group(1).upper()), x)
    return s[0].lower() + s[1:]