当我们想打印一段话,而这段话中有一些数字和字符串变量已经被我们事先定义过,这时候如何很好的插入这些变量呢?答案便是格式化字符串。在例一中我们用了两次格式化字符串,第一个%d用来指代stud_male,第二个%d用来指代stud_female。我们在要打印的一段话也就是引号里面中用%d当成变量的替身占住位置,然后在引号外面...
2.4.3. 格式字符串字面值 https://docs.python.org/zh-cn/3/reference/lexical_analysis.html#formatted-string-literals 7.1.1. 格式化字符串字面值 https://docs.python.org/zh-cn/3/tutorial/inputoutput.html#formatted-string-literals 那这次3.12版本又加了什么新功能呢? 首先是可以重用引号。 我们都知道,...
# You can also format using f-strings or formatted string literals (in Python 3.6+) name = "Reiko" f"She said her name is ." # => "She said her name is Reiko" # You can basically put any Python statement inside the braces and it will be output in the string. f" is characters...
Then, it applies the specifier to the value to return a formatted value. The format specifier must follow the rules of the string formatting mini-language.Just like the .format() method, f-strings also support the string formatting mini-language. So, you can use format specifiers in your f...
String formatting with format() As numbers, string can be formatted in a similar way with format(). Example 6: String formatting with padding and alignment # string padding with left alignment print("{:5}".format("cat")) # string padding with right alignment print("{:>5}".format("cat...
This example constructs a multiline string that includes several variables. Multiline f-strings are useful for generating formatted reports or messages. $ python main.py name: John Doe age: 34 occupation: gardener Calling functions You can call functions directly inside f-strings. This allows you...
formatted_string="My name is%s and I am%d years old."%(name,age) print(formatted_string) ``` 运行以上代码,输出结果为: ``` My name is John and I am 25 years old. ``` 在上述示例中,初始的字符串包含了两个占位符`%s`和`%d`,分别表示要在字符串中插入字符串和整数。通过在字符串末尾加...
s strings support the sequence type methods described in the Sequence Types — str, unicode, list, tuple, buffer, xrange section. To output formatted strings use template strings or the % operator described in the String Formatting Operations section. Also, see the re module for string functions...
A single format (%10.5f), a sequence of formats, or a multi-format string, e.g. ‘Iteration %d – %10.5f’, in which case delimiter is ignored. For complex X, the legal options for fmt are: a single specifier, fmt=’%.4e’, resulting in numbers formatted like ‘ (%s+%sj)’ ...
print(formatted_string) print(formatted_fstring) 10、字符串编码与解码: 使用encode()和decode()方法 s = "Hello" encoded = s.encode("utf-8") # bytes 对象 decoded = encoded.decode("utf-8") # "Hello" print(encoded) print(decoded) 11、字符串判断 使用startswith(), endswith(), isalpha()...