Python 如何使用正则表达式在字符串中查找美国邮政编码？

填写代码，检查传递的文本是否包含可能的美国邮政编码，格式如下：精确为5位数字，有时（但不总是）后跟一个多4位的破折号。邮政编码前面必须至少有一个空格，并且不能位于文本的开头

无法生成所需的输出

import re
def check_zip_code (text):
  result = re.search(r"\w+\d{5}-?(\d{4})?", text)
  return result != None

print(check_zip_code("The zip codes for New York are 10001 thru 11104.")) # True
print(check_zip_code("90210 is a TV show")) # False
print(check_zip_code("Their address is: 123 Main Street, Anytown, AZ 85258-0001.")) # True
print(check_zip_code("The Parliament of Canada is at 111 Wellington St, Ottawa, ON K1A0A9.")) # False

你可以用

(?!\A)\b\d{5}(?:-\d{4})?\b

完整代码：

import re

def check_zip_code (text):
    m = re.search(r'(?!\A)\b\d{5}(?:-\d{4})?\b', text)
    return True if m else False

print(check_zip_code("The zip codes for New York are 10001 thru 11104.")) # True
print(check_zip_code("90210 is a TV show")) # False
print(check_zip_code("Their address is: 123 Main Street, Anytown, AZ 85258-0001.")) # True
print(check_zip_code("The Parliament of Canada is at 111 Wellington St, Ottawa, ON K1A0A9.")) # False

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同时，我发现有一个名为的包，它可能有额外的帮助。

试试你将得到的代码

import re


def check_zip_code (text):
    return bool(re.search(r" (\b\d{5}(?!-)\b)| (\b\d{5}-\d{4}\b)", text))


assert check_zip_code("The zip codes for New York are 10001 thru 11104.") is True
assert check_zip_code("90210 is a TV show") is False
assert check_zip_code("Their address is: 123 Main Street, Anytown, AZ 85258-0001.") is True
assert check_zip_code("The Parliament of Canada is at 111 Wellington St, Ottawa, ON K1A0A9.") is False

assert check_zip_code("x\n90201") is False
assert check_zip_code("the zip somewhere is 98230-0000") is True
assert check_zip_code("the zip somewhere else is not 98230-00000000") is False

import re
def check_zip_code (text):
  result = re.search(r"\s+\d{5}-?(\d{4})?", text)
  return result != None

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试试这个

考虑到邮政编码前面必须有空格，要求“…不能在文本开头”是多余的。您可以通过让正则表达式断言（替换）所需的五个数字构成一个空格来区分您的答案。我已经记了一张便条，下周再来看看你有没有这样做。你肯定不认为我的建议是认真的@卡利斯沃维兰：好吧，你等一下-是的，我有。这是匹配的'12345-'或'123456789'，但不是

12345

import re
def check_zip_code (text):
    result = re.search(r" \d{5}|\d[5]-\d{4}", text)
    return result != None

import re
def check_zip_code (text):
  result = re.search(r"\d{5}[-\.d{4}]", text)
  return result != None

print(check_zip_code("The zip codes for New York are 10001 thru 11104.")) # True
print(check_zip_code("90210 is a TV show")) # False
print(check_zip_code("Their address is: 123 Main Street, Anytown, AZ 85258-0001.")) # True
print(check_zip_code("The Parliament of Canada is at 111 Wellington St, Ottawa, ON K1A0A9.")) # False