Case Insensitivity:In regular expressions, the “case insensitivity” modifier allows you to match patterns without distinguishing between uppercase and lowercase letters. It’s denoted by the letter ‘i’ and can be added to the end of the regular expression pattern using the syntax “/pattern/i...
We saw how to find and replace the regex pattern with a fixed string in the earlier example. In this example, we see how toreplace a pattern with an output of a function. For example, you want to replace all uppercase letters with a lowercase letter. To achieve this we need the follo...
[A-Z] All uppercase A to Z letters[a-z] All lowercase a to z letters[A-z] All Uppercase and lowercase a to z lettersi+ i at least one timei* i zero or more timesi? i zero or 1 timei{n} i occurs n times in sequence...
In this example, the string contains uppercase and lowercase letters that we need to replace. We need to replace the uppercase with the lowercase and vice versa. In order to do that, we will make two groups and then add a function for the replacement. ...
| text = '这是文本'nums = '123456 '#查找文本 text.find('is ')text.find('您的')#验证检查 text.isalpha()text.isdigit()isdigit 号码()#串联' . join((文字,数字)' . join((文字,数字)#改变大小写 text.upper()text.lower()#拆分字符串 text.split(' ')#替换 text.replace('is ',' was...
classicsearchandreplace, regular expressions also allow us to perform string substitution on dynamic strings in a relatively straightforward fashion. The easiest example, in a web scraping context, may be to replace uppercase tags in a poorly formatted HTML document with the proper lowercase ...
importstringimportrandom defstring_generator(size):chars=string.ascii_uppercase+string.ascii_lowercasereturn''.join(random.choice(chars)for_inrange(size))defstring_num_generator(size):chars=string.ascii_lowercase+string.digitsreturn''.join(random.choice(chars)for_inrange(size))# Random String test=...
string.ascii_uppercase#获取所有ascii码中的大写英文字母 string.ascii_lowercase#获取所有ascii码中的小写英文字母 string.digits#获取所有的10进制数字字符 string.octdigits#获取所有的8进制数字字符 string.hexdigits#获取所有16进制的数字字符 string.printable#获取所有可以打印的字符 ...
import stringimport randomdef string_generator(size):chars = string.ascii_uppercase + string.ascii_lowercasereturn ''.join(random.choice(chars) for _ in range(size))def string_num_generator(size):chars = string.ascii_lowercase + string.digitsreturn ''.join(random.choice(chars) for _ in rang...
一致的命名风格。例如lower_case_with_underscores(小写带下划线)、CapWords(首字母大写)、camelCase(驼峰命名法)等。 模块级标识符要短小,而类级标识符可略长。 如果标识符包含多个单词,可使用下划线连接或采用驼峰命名法。 对类名使用大写字母开头的单词(CapWords)。