def capitalize(s, lower_rest=False):
# print(s)
# fooBar
# fooBar
# print(s.upper())
# FOOBAR
# FOOBAR
# print(s[:1].upper())
# F
# F
# print(s[1:].lower())
# oobar
# oobar
# print(s[1:])
# ooBar
# ooBar
# print(s[:1].upper() + (s[1:].lower() if lower_rest else s[1:]))
'''
成立执行的语句 if 条件 else 不成立执行的语句
'''
capitalize('fooBar')
# FooBar
capitalize('fooBar', True)
# Foobar
2020-05-03