Python检查代码是否有错误

Question

我已经被分配去编写一个名为author functions的程序。我写的一个功能在我看来是正确的，但我想知道是否有任何不同的写作方式，或者我的功能有任何错误。代码如下。谢谢！

高清CLEAN_UP（S）： “””（STR） - > STR

Return a new string based on s in which all letters have been 
converted to lowercase and punctuation characters have been stripped 
from both ends. Inner punctuation is left untouched. 

>>> clean_up('Happy Birthday!!!') 
'happy birthday' 
>>> clean_up("-> It's on your left-hand side.") 
" it's on your left-hand side" 
""" 

punctuation = """!"',;:.-?)([]<>*#\n\t\r""" 
result = s.lower().strip(punctuation) 
return result 

####完成以下功能

def avg_word_length(text): 
    """ (list of str) -> float 

    Precondition: text is non-empty. Each str in text ends with \n and 
    text contains at least one word. 

    Return the average length of all words in text. 

    >>> text = ['James Fennimore Cooper\n', 'Peter, Paul and Mary\n'] 
    >>> avg_word_length(text) 
    5.142857142857143 
    """ 

    # To do: Fill in this function's body to meet its specification. 

    x = '' 
    for i in range(len(text)): 
     x = x + clean_up(text[i]) 
     words = x.split() 
    for word in words: 
     average = sum(len(word) for word in words)/len(words) 
    return average 

Answer 1

您要加入的最后的，第一句话。每串在一起，你需要让一个空间：

def avg_word_length(text): 
    """ (list of str) -> float 

    Precondition: text is non-empty. Each str in text ends with \n and 
    text contains at least one word. 

    Return the average length of all words in text. 

    5.142857142857143 
    """ 
    cleaned = " ".join([clean_up(w) for w in text]).split() # join using a space between to separate the start and end of the strings 
    return sum(len(w) for w in cleaned)/len(cleaned) 

在您的代码cooperpeter变成一个词让你的计算是关闭

for word in words:是无所事事的sum(len(word) for word in words)有用还遍历的话，当所有的串联通过循环完成，而不是每次你应该分裂：

for i in range(len(text)): 
    x += clean_up(text[i]) 
words = x.split() # outside the loop