7 8 Public module variables: 9 10 whitespace -- a string containing all characters considered whitespace 11 lowercase -- a string containing all characters considered lowercase letters 12 uppercase -- a string containing all characters considered uppercase letters 13 letters -- a string containing a...
7 8 Public module variables: 9 10 whitespace -- a string containing all characters considered whitespace 11 lowercase -- a string containing all characters considered lowercase letters 12 uppercase -- a string containing all characters considered uppercase letters 13 letters -- a string containing ...
复制 >>>a='abcdefghijklmnopqrstuvwxyz'>>>a'abcdefghijklmnopqrstuvwxyz'>>>a[0]'a'>>>a[3]'d'>>>a[26-1]'z'>>>a[-1]'z'>>>a[-26]'a'>>>a[-30]Traceback(most recent call last):File"<pyshell#91>",line1,in<module>a[-30]IndexError:string index outofrange replace()实现字...
importredefreplace_multiple_chars_regex(input_string,replace_dict):defreplace(match):returnreplace_dict[match.group(0)]pattern=re.compile("|".join(map(re.escape,replace_dict.keys()))returnpattern.sub(replace,input_string)# Example usage:original_string="Hello, World!"replacement_dict={"H":"h...
Getting to Know Strings and Characters in Python Creating Strings in Python Standard String Literals Escape Sequences in String Literals Raw String Literals Formatted String Literals The Built-in str() Function Using Operators on Strings Concatenating Strings: The + Operator Repeating Strings: The * ...
"# define the replacement stringreplacement="Examples"# replace the special characters '\', '$', and '?' with the replacement stringnew_text=re.sub(r"\\|[$?]",replacement,text)# print the modified textprint(new_text) In the code snippet, we first of all, define the original text ...
1.find()表示查找指定字符串在整个字符串中第一次出现的位置，返回的是下标，若未找到返回-1 str1 =...
# A string is alphabetic if all characters in the string are alphabetic and there # is at least one character in the string print(s1.isalpha()) # False 因为含有空格 1. 2. 3. 4. 5. 6. 7. 8. 9. 7.分割字符串 -split """ split方法可以使用指定字符将字符串分割,返回List 其使用格式...
将String 变量转换为 float、int 或 boolean 向字符串填充或添加零的不同方法 去掉字符串中的 space 字符 生成N个字符的随机字符串 以不同的方式反转字符串 将Camel Case 转换为 Snake Case 并更改给定字符串中特定字符的大小写 检查给定的字符串是否是 Python 中的回文字符串 ...
To include curly braces in an f-string, you need to escape it by doubling it:Python >>> lang = "Python" 👇 👇 >>> f"{{ {lang} }}" '{ Python }' In this example, the outer pair of curly braces tells Python to treat the inner braces as literal characters rather than part...