Perform a string formatting operation. The string on which this method is called can contain literal text or replacement fields delimited by braces {}. Each replacement field contains either the numeric index of a positional argument, or the name of a keyword argument. Returns a copy of the st...
F-strings are the clear winner in terms of readability. However, they don’t allow you to do lazy interpolation. There’s no way to use an f-string to create a reusable string template that you can interpolate later in your code. If you want a universal tool with all the features, th...
The example formats a string using two variables. print('%s is %d years old' % (name, age)) This is the oldest option. It uses the%operator and classic string format specifies such as%sand%d. print('{} is {} years old'.format(name, age)) Since Python 3.0, theformatfunction was i...
>>> formats % values 'My name is % zhao , I come from china' 格式化字符串希望保留小数位数 如 >>> fomats = 'Pi is %.3f' >>> fomats % pi 'Pi is 3.142' %.3f .3 表示保留的浮点数位数 f 表示浮点数 模板字符串 >>> from string import Template >>> s = Template('$x is $x'...
This operator formats a set of variables enclosed in a tuple together with a format string. The string contains a normal text together with theargument specifiers, special symbols are used like %s, and %d. These special symbols act as a placeholder. ...
Then, Python formats the result using the .__format__() special method under the hood. This method supports the string formatting protocol. This protocol underpins both the .format() method, which you already saw, and the built-in format() function:...
Return value from String format() Theformat()method returns the formattedstring. How String format() works? Theformat()reads the type of arguments passed to it and formats it according to the format codes defined in the string. For positional arguments ...
1fromstringimportTemplate2tmpl = Template("Hello, $who! $what enough for you?")3tmpl_final = tmpl.substitute(who="Mars", what="Dusty")4print(tmpl_final)5结果:6Hello, Mars! Dusty enoughforyou? 3. 字符串方法format(编码新时代,推荐使用!!!) ...
string类型数据 整型数据格式化 浮点型数据格式化 'g'解释 General format. For a given precision p >= 1, this rounds the number to p significant digits and then formats the result in either fixed-point format or in scientific notation, depending on its magnitude. ...
Theformat()method formats the specified value(s) and insert them inside the string's placeholder. The placeholder is defined using curly brackets: {}. Read more about the placeholders in the Placeholder section below. Theformat()method returns the formatted string. ...