Python:允许对特定字符进行验证

def is_alpha(s):
    return s.isalpha()

def is_digit(s):
    return s.isdigit()

def contains_only_specific_chars(s, chars):
    return all(c in chars for c in s)

# 示例
print(is_alpha("Hello"))  # True
print(is_digit("12345"))  # True
print(contains_only_specific_chars("abc", "abc"))  # True
print(contains_only_specific_chars("abcd", "abc"))  # False

import re

def validate_email(email):
    pattern = r'^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$'
    return re.match(pattern, email) is not None

def validate_phone(phone):
    pattern = r'^\d{10}$'  # 假设是10位数字的电话号码
    return re.match(pattern, phone) is not None

# 示例
print(validate_email("example@example.com"))  # True
print(validate_phone("1234567890"))  # True