我可以"pass"关键字分配给变量/名称吗？

Question

问题：是否可以将"pass"关键字分配给变量？ 如果不可能，请解释我为什么？

def validate_password(first_pwd, second_pwd):
vowels = [a,e,i,o,u]
first_length = len(first_pwd)
second_length = len(second_pwd)
passed_test = pass   #<----- This bit here#
# pwd length
# is password length over 8 characters?
if first_length >= 8:
passed_test
else:
print("Password too short")
# are the passwords the same
if first_pwd == second_pwd:
passed_test
else:
print("Password Mismatch")
# are the passwords first and last character different
if first_pwd[0] != first_pwd[-1]:
passed_test
else:
print("First Charater cannot be same as the last character")


# CODE TESTING AREA #
password1 = "abcd1234"
password2 = "abcd1234"
print(validate_password(password1, password2))
^ Return False ^ invalid password
password1 = "Abcd1234"
password2 = "Abcd1234"
print(validate_password(password1, password2))
^ Return True ^ Valid Password
password1 = "Abedi23a"
password2 = "Abedi23a"
print(validate_password(password1, password2))
^ Return False ^ invalid password
# CODE TESTING AREA #

普苏多代码

如果无法将"Pass"放入变量中，则只需留下一条评论，告诉我它的作用

Answer 1

不，你不能 -pass是一个语句，而不是一个值。就好像你想return赋值给一个变量一样。

话虽如此，为什么你甚至想分配一个基本上意味着nothing或ignore的语句呢？如果你不想执行某些东西，首先不要调用它：

def validate_password(first_pwd, second_pwd):
vowels = [a,e,i,o,u]
first_length = len(first_pwd)
second_length = len(second_pwd)
# pwd length
if first_length < 8:
print("Password too short")
elif first_pwd != second_pwd:
print("Password Mismatch")
elif first_pwd[0] == first_pwd[-1]:
print("First Charater cannot be same as the last character")
elif first_pwd[0].isalpha(vowels) != first_pwd[-1].isalpha(vowels):
# this is incomplete code there is a bunch that follow but i didnt put in here#
pass
else:
print("All is good!")
return True
return False

Answer 2

pass是Python中的一个保留关键字。它不能直接分配给任何变量。 为了更有意义，您可以简单地为其分配 None

passed_test=None
for x in range(2):
passed_test

在元音中，文字应该用引号括起来。

str.isalpha() 方法检查字符串是否仅由字母字符组成

import re
def validate_password(first_pwd, second_pwd):
first_length = len(first_pwd)
second_length = len(second_pwd)
tmp=first_pwd.lower()
# pass = pass   #<----- This bit here#
# pwd length
if first_length < 8:
print("Password too short")
elif first_pwd != second_pwd:
print("Password Mismatch")
elif tmp[0].isalpha() and tmp[-1].isalpha() and 
tmp[0] == tmp[-1]:
print("First Charater cannot be same as the last character")
elif len(re.findall('[aeiou]',tmp))>2:
print("More than 2 vowels")
elif not re.search(r'[a-z]',tmp):   
print("No alphabetic character")
elif first_pwd in (first_pwd.upper(),tmp):
print("All Characters are in same case")
else:
return True
return False


# CODE TESTING AREA #
password1 = "abcd123"
password2 = "abcd123"
print(validate_password(password1, password2))
password1 = "abcd1234"
password2 = "abcd1244"
print(validate_password(password1, password2))

password1 = "Abedi23a"
password2 = "Abedi23a"
print(validate_password(password1, password2))
password1 = "abed123o"
password2 = "abed123o"
print(validate_password(password1, password2))
password1 = "12345789"
password2 = "12345789"
print(validate_password(password1, password2))
password1 = "abcd1234"
password2 = "abcd1234"
print(validate_password(password1, password2))
password1 = "Abcd1234"
password2 = "Abcd1234"
print(validate_password(password1, password2))
# CODE TESTING AREA #