Correct variable names consist only of English letters, digits and underscores and they can't start with a digit.

Check if the given string is a correct variable name.

Example

• • For name = "var_1__Int", the output should be
    variableName(name) = true;
  • For name = "qq-q", the output should be
    variableName(name) = false;
  • For name = "2w2", the output should be
    variableName(name) = false.

 

我的解答：

def variableName(name):    dict = {
   'word':'qwertyuiopasdfghjklzxcvbnm', 'digit':'0123456789', 'underline':'_'}    if name[0].lower() in dict['word'] or name[0] in dict['underline']:        for i in name:            if i.lower() in dict['word'] or i in dict['underline'] or i in dict['digit']:                pass            else:                return False        return True    else:        return False

 

 

def variableName(name):    return name.isidentifier()