如何修复程序中的正则表达式问题？

Question

address = input("Please input the drivers home address (e.g. EH129DN): ")
addresspattern = "[A-Z][A-Z]/d/d/s/d[A-Z][A-Z]"
match = re.search(address, addresspattern)
if match:
    Continue = input ("Do you wish to continue? (Y/N): ")

我不知道为什么这不起作用，但它肯定是正则表达式

Answer 1

尝试：

address = input("Please input the drivers home address (e.g. EH129DN): ")
addresspattern = r"[A-Z]{2}\d{3}[A-Z]{2}"
match = re.search(addresspattern, address)
if match:
    Continue = input ("Do you wish to continue? (Y/N): ")

因为re.search模式是第一个参数。
EH129DN不包含任何空格，因此不需要\s

Answer 2

尝试使用原始输入代替输入

import re
address = raw_input("Please input the drivers home address (e.g. EH129DN): ")
addresspattern = "[A-Z][A-Z]/d/d/s/d[A-Z][A-Z]"
match = re.search(address, addresspattern)
if match:
    Continue = raw_input("Do you wish to continue? (Y/N): ")

输入和原始输入之间的差异Differences between `input` and `raw_input`

Answer 3

为了让您开始，您可以按以下方式对其进行重组：

ask = 'y'

while ask == 'y':
    address = raw_input("Please input the drivers home address (e.g. EH129DN): ")
    addresspattern = r"[A-Z][A-Z]\d\d\s?\d[A-Z][A-Z]"
    match = re.search(addresspattern, address)

    if match:
        print "Valid"
    else:
        print "Invalid"

    ask = raw_input("Do you wish to continue? (Y/N): ").lower()

提供以下类型的输出：

Please input the drivers home address (e.g. EH129DN): EH12 9DN
Valid
Do you wish to continue? (Y/N): y
Please input the drivers home address (e.g. EH129DN): EH129DN
Valid
Do you wish to continue? (Y/N): y
Please input the drivers home address (e.g. EH129DN): EH1 29DN
Invalid
Do you wish to continue? (Y/N): n

注意，如果您试图匹配所有有效的邮政编码，那么您将需要研究一个更重要的正则表达式。我保留了您现有的逻辑，但它现在允许在两者之间留有可选的空间。另外，我还使用了raw_input()，因为您需要文本输入