F-String是Python拥有的一个很强的特色功能。其目的是为了简化格式化字符串的方式，在2015年由Eric Smith在PEP 498— Literal String Interpolation中提出来的。本文收集设计了经典的fstring的使用例子，强烈推荐收藏，对读者后续编写程序，优美的使用f-string，可以做为很好的参考。在没有fstrin
下一节中,我会用一些例子向你展示一些你用f-string能做或不能做的事儿。 3、f-string 的限制 虽然f-string十分的便捷,但它并不能完全代替str.format。f-string在表达式出现的上下文中进行求值计算。根据PEP498,这意味着该表达式可以获取所有局部和全局变量。而且该表达式是在运行时计算的表达式。如果在 { <expr...
f-string examples: importdatetime name='Fred' age=50 anniversary=datetime.date(1991,10,12) # example1: f'My name is{name}, my age next year is{age+1}, my anniversary is{anniversary:%A,%B%d,%Y}.' >>>'My name is Fred, my age next year is 51, my anniversary is Saturday, Octob...
An f-string is denoted by thefprefix and allows embedded expressions inside curly brackets{}. These expressions are evaluated at runtime, making f-strings a great choice for constructing dynamic strings. For example: name = "Alice" age = 30 print(f"Hello, my name is {name} and I am {...
在 Python 3.6 之后，引入了 f-string 字符串格式化方法，可以直接在字符串前加上前缀f，然后在字符...
You just embed the desired objects or expressions in your string literal using curly brackets.It’s important to note that Python evaluates f-strings at runtime. So, in this example, both name and age are interpolated into the string literal when Python runs the line of code containing the ...
https://www.geeksforgeeks.org/string-alignment-in-python-f-string/ list 左对齐输出 左右对齐 Example 1 使用 "<" 左对齐 Example 2 : 使用 ">" 右对齐 Example 3 : 使用 "^" 中间对其 Example 5 : 对其方式打印list 使用python-tabulate
Python string formatting The following example summarizes string formatting optionsinPython.#!/usr/bin/pythonname='Peter'age= 23print('%s is %d years old'%(name, age))print('{} is {} years old'.format(name, age))print(f'{name} is {age} years old')>>>print('%s is %d years old'...
with open("example.txt", "r") as file:content = file.read()# 在文件中查找子字符串position = content.find("Hello")# 输出结果if position != -1:(tab)print(f"'Hello' found at position {position}")else:(tab)print("'Hello' not found")本例中 首先，我们打开一个名为"example.txt"的...
Example f-strings Let's start with these variables: >>>full_name="Trey Hunner">>>costs=[1.10,0.30,0.40,2] This f-string hasone replacement field: >>>print(f"My name is{full_name}.")My name is Trey Hunner. This f-string hastwo replacement fields: ...