can any one now python language

Question

e.mccormick · Answer

I am not sure what you are asking, but Python is free any anyone can learn it.

anonymous · Answer

can you help me to solve this assignment

e.mccormick · Answer

Well, what part are you having trouble with?  What did you try that gave you an error?

anonymous · Answer

i cannot understand average sentence function completely. can you help me to solve this function.and also compare signature function. plz help me'

e.mccormick · Answer

So these three:
```
def avg_sentence_length(text):
    """ (list of str) -> float

    Precondition: text contains at least one sentence.
    
    A sentence is defined as a non-empty string of non-terminating 
    punctuation surrounded by terminating punctuation or beginning or 
    end of file. Terminating punctuation is defined as !?.

    Return the average number of words per sentence in text.   

    >>> text = ['The time has come, the Walrus said
',
         'To talk of many things: of shoes - and ships - and sealing wax,
',
         'Of cabbages; and kings.
',
         'And why the sea is boiling hot;
',
         'and whether pigs have wings.
']
    >>> avg_sentence_length(text)
    17.5
    """
    
    # To do: Fill in this function's body to meet its specification.
    

def avg_sentence_complexity(text):
    """ (list of str) -> float

    Precondition: text contains at least one sentence.    

    A sentence is defined as a non-empty string of non-terminating
    punctuation surrounded by terminating punctuation or beginning or
    end of file. Terminating punctuation is defined as !?.
    Phrases are substrings of sentences, separated by one or more of ,;:

    Return the average number of phrases per sentence in text.

    >>> text = ['The time has come, the Walrus said
',
         'To talk of many things: of shoes - and ships - and sealing wax,
',
         'Of cabbages; and kings.
',
         'And why the sea is boiling hot;
',
         'and whether pigs have wings.
']
    >>> avg_sentence_complexity(text)
    3.5
    """
    
    # To do: Fill in this function's body to meet its specification.
    
    
def compare_signatures(sig1, sig2, weight):
    """ (list, list, list of float) -> float

    Return a non-negative float indicating the similarity of the two 
    linguistic signatures, sig1 and sig2. The smaller the number the more
    similar the signatures. Zero indicates identical signatures.
    
    sig1 and sig2 are 6-item lists with the following items:
    0  : Author Name (a string)
    1  : Average Word Length (float)
    2  : Type Token Ratio (float)
    3  : Hapax Legomena Ratio (float)
    4  : Average Sentence Length (float)
    5  : Average Sentence Complexity (float)

    weight is a list of multiplicative weights to apply to each
    linguistic feature. weight[0] is ignored.

    >>> sig1 = ["a_string" , 4.4, 0.1, 0.05, 10.0, 2.0]
    >>> sig2 = ["a_string2", 4.3, 0.1, 0.04, 16.0, 4.0]
    >>> weight = [0, 11.0, 33.0, 50.0, 0.4, 4.0]
    >>> compare_signatures(sig1, sig2, weight)
    12.000000000000007
    """
    
    # To do: Fill in this function's body to meet its specification.
```

e.mccormick · Answer

def avg_sentence_length(text) just averages the length of each string, so not too bad.

def avg_sentence_complexity(text) will take a little more. You need to find what a phrase is, probably involves punctuation, and average the number of those.

def compare_signatures(sig1, sig2, weight) needs everything else first.  Then it does multiplicative weighting.  Did they give an example of what multiplicative weighting is or do you ned help with that?