在开发里, 字符串属于最为常用到的数据类型, 特别是字符串格式化这一方面。f-相较于别的字符串格式化办法而言, 是更加便捷的, 它能够使用f或者F两种形式, 于{}当中, 能够输出变量、表达式, 并且还能够调用函数。
字符串是开发中最常用的数据类型，尤其是字符串的格式化。
相对于别的字符串格式化方法而言, f-更为便捷, 能使用f或者F, 在{}之中能够输出变量、表现形式, 还能够调用函数, 在运用时要留意防止内部的引号与最外层的引号产生冲突。
# f-用法
## 1.输出变量
name = 'chen'
age = 30
进行打印操作, 打印出“The age of {name} is {age}.”。
将内容打印出来, 具体为打印出这样的内容: The age of 加上名字 是 年龄数值。
## 2.输出表达式
print(f'3+5={3 + 5}')
## 3.调用函数
def say(name):
'hello, ' + name
# print(f'say {say('chen')}')
print(f"say {say('chen')}")
## 4. 使用字典
= , 其名为“chen”, 年纪是12。
### 注意获取字典的value时不要和最外层的符号冲突BBs.HoUniAoHaO.CoM/post/1684.html
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