Question

我会觉得有点像。在过去的几天里才开始学习Python。

这是我到目前为止所拥有的

import os
import urllib2
from csv import DictReader

with open('Infodoc 2.txt','r') as infile:
    incsv = DictReader(infile)
    for row in incsv:
        print row['Publisher']
        DocIn = row['DocIn']
        DocOut = row['DocOut']
        WebAddy = row['WebAddy']

def moo():
    os.rename(DocIn, DocOut)
    file(DocIn, "wb").write(urllib2.urlopen(WebAddy).read())
    hosts0 = open(DocIn,"r")
    hosts1 = open(DocOut,"r")
    lines1 = hosts0.readlines()
    for i,lines2 in enumerate(hosts1):
        if lines2 != lines1[i]:
            print "line ", i, " in hosts1 is different \n"
            print lines2

moo()

我的目标是让我的txt文档的每一行都通过我的功能。这段代码只运行一次，就是这样。我希望它能够通过并拉动每一行并运行它然后转到下一行。我有一种感觉，我需要将行分成几行并重复某种循环？

如果你能指出我正确的方向，或者给我一个很棒的小故障。

Answer 1

问题与您定义moo()的位置有关。正如所写的那样，在你的进口之后

with open('Infodoc 2.txt','r') as infile:
    incsv = DictReader(infile)
    for row in incsv:
        print row['Publisher']
        DocIn = row['DocIn']
        DocOut = row['DocOut']
        WebAddy = row['WebAddy']

运行。循环遍历所有'Infodoc 2.txt'后，moo()已定义

def moo():
    os.rename(DocIn, DocOut) #the last DocIn and DocOut from your csv file
    file(DocIn, "wb").write(urllib2.urlopen(WebAddy).read())
    hosts0 = open(DocIn,"r")
    hosts1 = open(DocOut,"r")
    lines1 = hosts0.readlines()
    for i,lines2 in enumerate(hosts1):
        if lines2 != lines1[i]:
            print "line ", i, " in hosts1 is different \n"
            print lines2

之后，您拨打moo()

moo()

moo()处理'Infodoc 2.txt'的最后一行（仅最后一行），程序结束。

因此，您只需将moo()的定义移至某个点，然后稍微修改一下您的文件（它应该DocIn，DocOut和{{ 1}}作为参数），并在循环中调用它，就像这样

WebAddy

添加import os import urllib2 from csv import DictReader def moo(DocIn, DocOut, WebAddy): os.rename(DocIn, DocOut) file(DocIn, "wb").write(urllib2.urlopen(WebAddy).read()) hosts0 = open(DocIn,"r") hosts1 = open(DocOut,"r") lines1 = hosts0.readlines() for i,lines2 in enumerate(hosts1): if lines2 != lines1[i]: print "line ", i, " in hosts1 is different \n" print lines2 with open('Infodoc 2.txt','r') as infile: incsv = DictReader(infile) for row in incsv: print row['Publisher'] DocIn = row['DocIn'] DocOut = row['DocOut'] WebAddy = row['WebAddy'] moo(DocIn, DocOut, WebAddy)函数可能不是一个坏主意，以防您想要在路上重用main()（即将模块导入其他地方）。

moo()

最后，使用def main(infodoc): with open(infodoc,'r') as infile: incsv = DictReader(infile) for row in incsv: print row['Publisher'] DocIn = row['DocIn'] DocOut = row['DocOut'] WebAddy = row['WebAddy'] moo(DocIn, DocOut, WebAddy)保护它，这样如果/当您导入它时，您的整个脚本都不会运行。最终版本如下所示：

if __name__ == '__main__':

Python，需要将csv文件输入循环

1 个答案: