Python의 f-문자열은 예상보다 많은 기능을 수행합니다.

str_value = "hello，python coders" print(f"{ str_value = }") # str_value = 'hello，python coders'

num_value = 123 print(f"{num_value % 2 = }") # num_value % 2 = 1

import datetime today = datetime.date.today() print(f"{today: %Y%m%d}") # 20211019 print(f"{today =: %Y%m%d}") # today = 20211019

>>> a = 42 >>> f"{a:b}" # 2进制 '101010' >>> f"{a:o}" # 8进制 '52' >>> f"{a:x}" # 16进制，小写字母 '2a' >>> f"{a:X}" # 16进制，大写字母 '2A' >>> f"{a:c}" # ascii 码 '*'

>>> num_value = 123.456 >>> f'{num_value = :.2f}' #保留 2 位小数 'num_value = 123.46' >>> nested_format = ".2f" #可以作为变量 >>> print(f'{num_value:{nested_format}}') 123.46

>>> x = 'test' >>> f'{x:>10}' # 右对齐，左边补空格 'test' >>> f'{x:*<10}'# 左对齐，右边补* 'test******' >>> f'{x:=^10}'# 居中，左右补= '===test===' >>> x, n = 'test', 10 >>> f'{x:~^{n}}' # 可以传入变量 n '~~~test~~~' >>>

>>> x = '中' >>> f"{x!s}" # 相当于 str(x) '中' >>> f"{x!r}" # 相当于 repr(x) "'中'"