Question

我正在研究一个我被分配的程序，它只是获取十四行诗的单词和行数。这里的第一部分代码是有效的，也是我教授正在寻找的正确输出，即使它包含十四行诗的前两行。

import string


def main():

    ifName = input("What file would you like to analyze? ")
    ofName = input("What file should the results be written to? ")

    infile = open(ifName, "r")
    outfile = open(ofName, "w")

    lineCount = 0
    wordCount = 0

    for line in infile:
        lineCount +=1
        wordLine = line.split()
        L = len(wordLine)
        wordCount += L


    print("The file", ifName, "had:", file= outfile)
    print("words =", wordCount, file= outfile)
    print("lines =", lineCount, file= outfile)
    print("The results have been printed to:", outfile)

    infile.close
    outfile.close

main()

但是，分配的下一部分是使用第二个函数“countNum”获得相同的结果，参数为“line”。所以countNum（行）。

这是我一直在搞乱的代码，看看我是否可以让它发挥作用。

import string


def countNum(line):
    wordCount = 0
    wordLine = line.split()
    L = len(wordLine)
    wordCount +=L
    print(wordCount)

def main():

    ifName = input("What file would you like to analyze? ")
    ofName = input("What file should the results be written to? ")

    infile = open(ifName, "r")
    outfile = open(ofName, "w")

    lineCount = 0
    wordCount = 0

    for line in infile:
        lineCount +=1
        wordTotal += countNum(line)
        ##wordLine = line.split()
        ##L = len(wordLine)
        ##wordCount += L


  ##  print("The file", ifName, "had:", file= outfile)
  ##  print("words =", wordCount, file= outfile)
  ##  print("lines =", lineCount, file= outfile)
  ##  print("The results have been printed to:", outfile)

    infile.close
    outfile.close

main()

如果您想知道，这是sonnet.txt文件：

Shakespeare’s Sonnet 18

Shall I compare thee to a summer's day?
Thou art more lovely and more temperate:
Rough winds do shake the darling buds of May,
And summer's lease hath all too short a date:
Sometime too hot the eye of heaven shines,
And often is his gold complexion dimm'd;
And every fair from fair sometime declines,
By chance or nature's changing course untrimm'd;
But thy eternal summer shall not fade
Nor lose possession of that fair thou owest;
Nor shall Death brag thou wander'st in his shade,
When in eternal lines to time thou growest:
So long as men can breathe or eyes can see,
So long lives this, and this gives life to thee.

Answer 1

您的countNum正在打印结果而不是返回结果：

def countNum(line):
    return len(line.split())

此外，您的密切方法需要在()之后。它们实际上并没有执行：

infile.close
outfile.close

到

infile.close()
outfile.close()

Answer 2

def count(line):
    return len(line.split())

def main():
    infile = open(input("File to analyse: "), "r")
    file = infile.read().splitlines()
    infile.close()

    lineCount = len(file)
    wordTotal = 0

    for line in file:
        words = count(line)

        wordTotal += words

    print("Lines:", lineCount)
    print("Words:", wordTotal)

main()

Answer 3

您可以使用len来获取列表的长度。行列表由f.readlines()给出，一行中的单词列表由line.split()给出。我们可以使用内置sum来对列表求和，并且是超级pythonic https://docs.python.org/3/library/functions.html#sum

您应该使用with关键字自动关闭Python。 https://docs.python.org/3/tutorial/inputoutput.html

所以我们有：

with open(infilename, "r") as infile, open(outfilename, "w") as outfile:
    lines = infile.readlines()
    linecount = len(lines)
    wordcount = sum([len(line.split()) for line in lines])
    print(linecount)
    print(wordcount)

有关列表推导的信息，请参阅https://docs.python.org/3.6/tutorial/datastructures.html#list-comprehensions

使用多种函数的Python中的字计数器

3 个答案: