小编Eri*_*Lan的帖子

刚开始学习python并尝试使用循环编写代码来检查唯一字母,如下所示:

def has_unique_letters(x):
  count = 0
  letters = set(x)
  while count < len(x):
    if x[count] in letters:
       return False
    count += 1
  return True

但无论我在x中输入什么,它都返回false.代码有什么问题？谢谢!

尝试使用以下代码检查字符串:

def check_password(x):
  if has_unique_letters(x) == False:
    print "Warning! Please ensure letters are not repeated."
  if has_even_vowels(x) == False:
    print "Warning! Please ensure password contains an even number of vowels."
  if has_special_character(x) == False:
    print "Warning! Please ensure password contains at least one of {@, #, *, $}"
  if has_divisible_numbers(x) == False:
    print "Warning! Please ensure all numbers are divisible by 2 or 3."
  print "Sorry, your password does not meet our criteria."
print "Congratulations, your password meets our criteria." …