username):returnTruereturnFalseusernames=['user1','u','username_with_long_string','ValidUser123']fornameinusernames:ifvalidate_username(name):print(f"'{name}' 是有效的用户名")else:print(f"'{name}' 不是有效的用户名")
defis_leap_year(year):return(year%4==0andyear%100!=0)or(year%400==0)defvalidate_date_with_leap(date_string):forformat_name,patternindate_patterns.items():ifre.match(pattern,date_string):year=int(date_string.split('-')[0])if'-'indate_stringelseint(date_string.split('/')[2])if'...
defvalidatePhone(phone):msg="提示信息:请输入手机号码"# 判断输入的字符的长度是否合法iflen(phone)==11:# 判断是否156/186/188开头ifphone.startswith("156")or phone.startswith("186")or phone.startswith("188"):# 判断每一个字符都是数字fornuminphone:#isdigit()函数用于判断调用者是否数字ifnot num...
import mmap import re # 打开大文件并映射到内存 with open('large_file.txt', 'r+b') as f: mmapped_file = mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ) # 创建一个全局正则表达式编译对象,提升性能 regex = re.compile(r'要查找的正则表达式') # 遍历映射区域,查找匹配项 for match in...
In this learning content, we will explore several practical examples and use cases where Python regex expressions can be applied effectively. Example 1: Validating Email Addresses Code: import re def validate_email(email): pattern = r'^[\w\.-]+@[\w\.-]+\.\w+$' ...
# Python program to validate name using IGNORECASE in RegEx # Importing re package import re def validating_name(name): # RegexObject = re.compile( Regular expression, flag ) # Compiles a regular expression pattern into a regular expression object regex_name = re.compile(r'^(Mr\.|Mrs\.|...
I'm utilizing regular expressions to perform Syntax Analysis similar to what I'm doing withKivyandre. To validate basic operations syntax (e.g., +, -, *, /, and ()), the user inputs a string, which is checked with regex. However, I am unsure how to utilize RegEx in an if statem...
Python 标准库自带了强大的 logging 日志模块,在各种 python 模块中得到广泛应用。 一、简单使用 1. 入门小案例 importlogging # 默认的warning级别,只输出warning以上的 # 使用basicConfig()来指定日志级别和相关信息 logging.basicConfig(level=logging.DEBUG,# 设置级别,根据等级显示 ...
userphone = input("请输入手机号码:") # 验证用户手机号码是否合法的函数 def validatePhone(phone): msg = "提示信息:请输入手机号码" # 判断输入的字符的长度是否合法 if len(phone) == 11: # 判断是否156/186/188开头 if phone.startswith("156") or phone.startswith("186") or phone.startswith...
phone_number_regex ="^(\+\d{1,3})?\s?\(?\d{1,4}\)?[\s.-]?\d{3}[\s.-]?\d{4}$" Note:Keep in mind that this pattern is just an example and may need to be adjusted depending on the specific phone number formats you want to validate!