判断字符是否含有完全相同的字母

def compare(str1,str2):
    Low = lambda s:s.lower().replace(' ','')
    if Low(str1)==Low(str2):
        print('YES')
    else:
        print('NO')

        
>>> exam = '''Thisisapencil
  thisis an apple'''
>>> string = exam.split('\n')
>>> compare(string[0],string[1])
NO
>>> exam = '''Thisisapencil
  thisis a pencil'''
>>> string = exam.split('\n')
>>> compare(string[0],string[1])
YES
>>>