Python未写入文件

Question

我正在制作一个脚本，该脚本读取.txt文件，然后继续使用该信息和日期来创建动态html文件。 它昨天工作了，但是今天，似乎它不想向该文件写入任何内容...

这是源代码。

from __future__ import print_function
import httplib2
import os
import io
import shutil
import datetime
import random
import re
from apiclient.http import MediaIoBaseUpload, MediaIoBaseDownload
from datetime import date
from apiclient import discovery
import oauth2client
from oauth2client import client
from oauth2client import tools

def filerino():

    daginfo     = str(datetime.datetime.today().weekday())
    ukenr       = (datetime.datetime.today().isocalendar()[1])
    dato        = datetime.date.today()
    day         = datetime.date.today().day
    month       = datetime.date.today().month
    yesterday   = (day - 1)
    tomorrow    = (day +1)
    todayerino  = str(day) + "/" + str(month)
    yesterdayerino = str(yesterday) + "/" + str(month)
    tomorrowerino = str(tomorrow) + "/" + str(month)
    currentweek = (datetime.datetime.today().isocalendar()[1])
    lastweek    = ((datetime.datetime.today().isocalendar()[1]) - 1)
    currentweekerino = "Uke " + str(currentweek)
    lastweekerino = "Uke " + str(lastweek)



    file=open("plan.txt", "r")
    if daginfo == "3":
        daginfo = ("Matte\n" + "Naturfag\n" + "Engelsk\n" + "ToF\n")
        dag = ("Torsdag")
        imorgen = ("Fredag")
    elif daginfo == "0":
        daginfo = ("Samfunnsfag\n" + "Geografi\n" + "Norsk / Engelsk\n")
        dag = ("Mandag")
        imorgen = ("Torsdag")
    elif daginfo == "1":
        daginfo = ("Naturfag\n" + "Spraak\n" + "Engelsk\n" + "Matte\n")
        dag = ("Tirsdag")
        imorgen = ("Onsdag")
    elif daginfo == "2" and ukenr %2 == 0:
        daginfo = ("Gym\n" + "Matte\n" + "Norsk\n")
        dag = ("Onsdag")
        imorgen = ("Torsdag")
    elif daginfo == "2" and ukenr %2 != 0:
        daginfo = ("Gym\n" + "Matte\n")
        dag = ("Onsdag")
        imorgen = ("Torsdag")
    elif daginfo == "4":
        daginfo = ("Spraak\n" + "Norsk\n" + "Engelsk\n" + "ToF\n")
        dag = ("Fredag")
        imorgen = ("Laurdag")
    elif daginfo == "5":
        daginfo = ("Ingen fag idag, siden det er HELG! :D")
        dag = ("Laurdag")
        imorgen = ("Saundag")
    elif daginfo == "6":
        daginfo = ("Ingen fag idag, siden det er HELG! :D")
        dag = ("Saundag")
        imorgen = ("Mandag")


    file=open("plan.txt","r")
    s = file.read()
    dayresult = ((s.split(str(tomorrowerino)))[1].split(str(todayerino))[0]).strip()
    dayresult = dayresult[:dayresult.rfind('\n')]
    lines = re.split("\n", dayresult)
    timeserino = dayresult.count("\n")
    try:

        fagTitle = {}
        for x in range(-1, timeserino):
            x += 1
            fagTitle[x] = lines[x]

        fagContent = {}
        for x in range(-1, timeserino):
            x += 1
            fagContent[x-1] = lines[x]

        if timeserino == 1: #if there is 1 lines within the two dates.
            file=open("/testfolder/index.html", "w")
            file.write("""
           <!doctype html>
           <html lang="en">
           <head>

             <meta charset="utf-8">

             <title>InstaPlan</title>

             <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
             <link rel="stylesheet" href="main.css">
           </head>

           <body>
               <div class="jumbotron" id="nbn">
                 <h1 id="sub">""" + (dag) + """ """ + str(dato.day) + """/""" + str(dato.month) + """ """ + """Uke""" + """ """ + str(ukenr) + """:</h1>
                 <h1 id="mid"><small>""" + (daginfo) + """</small></h1>
               </div>
               <div class="jumbotron" id="nbn">
                 <h1 id="mid"><small>Lekser til """ + (imorgen) + """:</small></h1>
               </div>
               <div class="jumbotron" id="nbm">
                 <h1 id="sub">""" + fagTitle[0] + """</h1>
                 <h1><small>""" + fagContent[0] + """</small></h1>
               </div>
           </body>
           </html>
           """)
        elif timeserino == 3: #if there are 3 lines within the two dates.
            file=open("/testfolder/index.html", "w")
            file.write("""
           <!doctype html>
           <html lang="en">
           <head>

             <meta charset="utf-8">

             <title>InstaPlan</title>

             <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
             <link rel="stylesheet" href="main.css">
           </head>

           <body>
               <div class="jumbotron" id="nbn">
                 <h1 id="sub">""" + (dag) + """ """ + str(dato.day) + """/""" + str(dato.month) + """ """ + """Uke""" + """ """ + str(ukenr) + """:</h1>
                 <h1 id="mid"><small>""" + (daginfo) + """</small></h1>
               </div>
               <div class="jumbotron" id="nbn">
                 <h1 id="mid"><small>Lekser til """ + (imorgen) + """:</small></h1>
               </div>
               <div class="jumbotron" id="nbm">
                 <h1 id="sub">""" + fagTitle[0] + """</h1>
                 <h1><small>""" + fagContent[0] + """</small></h1>
               </div>
               <div class="jumbotron" id="nbm">
                 <h1 id="sub">""" + fagTitle[2] + """</h1>
                 <h1><small>""" + fagContent[2] + """</small></h1>
               </div>
           </body>
           </html>
           """)
        elif timeserino == 5: #if there are 5 lines within the two dates.
            file=open("/testfolder/index.html", "w")
            file.write("""
           <!doctype html>
           <html lang="en">
           <head>

             <meta charset="utf-8">

             <title>InstaPlan</title>

             <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
             <link rel="stylesheet" href="main.css">
           </head>

           <body>
               <div class="jumbotron" id="nbn">
                 <h1 id="sub">""" + (dag) + """ """ + str(dato.day) + """/""" + str(dato.month) + """ """ + """Uke""" + """ """ + str(ukenr) + """:</h1>
                 <h1 id="mid"><small>""" + (daginfo) + """</small></h1>
               </div>
               <div class="jumbotron" id="nbn">
                 <h1 id="mid"><small>Lekser til """ + (imorgen) + """:</small></h1>
               <div class="jumbotron" id="nbm">
                 <h1 id="sub">""" + fagTitle[0] + """</h1>
                 <h1><small>""" + fagContent[0] + """</small></h1>
               </div>
               <div class="jumbotron" id="nbm">
                 <h1 id="sub">""" + fagTitle[2] + """</h1>
                 <h1><small>""" + fagContent[2] + """</small></h1>
               </div>
               <div class="jumbotron" id="nbm">
                 <h1 id="sub">""" + fagTitle[4] + """</h1>
                 <h1><small>""" + fagContent[4] + """</small></h1>
               </div>
           </body>
           </html>
           """)

        elif timeserino == 7: #if there are 7 lines within the two dates.
            file=open("/testfolder/index.html", "w")
            file.write("""
           <!doctype html>
           <html lang="en">
           <head>

             <meta charset="utf-8">

             <title>InstaPlan</title>

             <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
             <link rel="stylesheet" href="main.css">
           </head>

           <body>
               <div class="jumbotron" id="nbn">
                 <h1 id="sub">""" + (dag) + """ """ + str(dato.day) + """/""" + str(dato.month) + """ """ + """Uke""" + """ """ + str(ukenr) + """:</h1>
                 <h1 id="mid"><small>""" + (daginfo) + """</small></h1>
               </div>
               <div class="jumbotron" id="nbn">
                 <h1 id="mid"><small>Lekser til """ + (imorgen) + """:</small></h1>
               <div class="jumbotron" id="nbm">
                 <h1 id="sub">""" + fagTitle[0] + """</h1>
                 <h1><small>""" + fagContent[0] + """</small></h1>
               </div>
               <div class="jumbotron" id="nbm">
                 <h1 id="sub">""" + fagTitle[2] + """</h1>
                 <h1><small>""" + fagContent[2] + """</small></h1>
               </div>
               <div class="jumbotron" id="nbm">
                 <h1 id="sub">""" + fagTitle[4] + """</h1>
                 <h1><small>""" + fagContent[4] + """</small></h1>
               </div>
               <div class="jumbotron" id="nbm">
                 <h1 id="sub">""" + fagTitle[6] + """</h1>
                 <h1><small>""" + fagContent[6] + """</small></h1>
               </div>
           </body>
           </html>
           """)
    except IndexError: #if it detects an IndexError because there either aren't any lines between the dates
        file=open("/testfolder/index.html", "w")
        file.write("""
       <!doctype html>
       <html lang="en">
       <head>

         <meta charset="utf-8">

         <title>InstaPlan</title>

         <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
         <link rel="stylesheet" href="main.css">
       </head>

       <body>
           <div class="jumbotron" id="nbn">
             <h1 id="sub">""" + (dag) + """ """ + str(dato.day) + """/""" + str(dato.month) + """ """ + """Uke""" + """ """ + str(ukenr) + """:</h1>
             <h1 id="mid"><small>""" + (daginfo) + """</small></h1>
           </div>
           <div class="jumbotron" id="nbn">
             <h1 id="mid"><small>Lekser til """ + (imorgen) + """:</small></h1>
           </div>
           <div class="jumbotron" id="nbm">
             <h1 id="sub">ayylmao</h1>
           </div>
       </body>
       </html>
       """)
if __name__ == '__main__':
    main()
    filerino()

它写入名为index.html的文件。 我认为问题出在Try语句中，但我尝试将其删除，但它丝毫没有影响。

谢谢。

Answer 1

1）确保它符合任何情况。 您没有以下else条件，您的timeserino可能无法满足您的1-7种情况

if timeserino == 1:
   # write something
elif timeserino ==2:
   # write something
...
elif timeserino == 7:
   # write something
else:
   write something

2）完成写入后关闭文件

Answer 2

您的根本问题是您的函数太长且太复杂，您无法对其进行调试（或了解其失败原因）。

易于重构的意图可以使意图更加清晰，例如经常使用的命名表达式（例如datetime.datetime.today() ），以及使用数组从序列中选择某些内容，而不是一长串的if语句：

today = datetime.datetime.today()
weekday = today.weekday()
dagnavn = ['Mandag', 'Tirsdag', 'Onsdag', 'Torsdag', 'Fredag', u'Lørdag', u'Søndag']
dag = dagnavn[weekday]

然后可以类似地选择明天：

imorgen = dagnavn[(weekday + 1) % 7]

具有消除DAG和imorgen从if语句， daginfo可以以更具描述性的使用方式DayNames中代替平日数字被分配给：

daginfo = {
    'Mandag': "Matte\n" + "Naturfag\n" + "Engelsk\n" + "ToF\n",
    'Tirsdag': "...",
    ...
}[dag]

到目前为止，您的代码是一个可以独立存在的“单元”（您似乎本能地通过类似于段落的间距来理解）。 应该将其拉出一个单独的函数，以使原始函数变得更小并且更易于推理（一个函数的长度通常不应超过您无需滚动即可显示在屏幕上的大小）。 函数如下所示：

# dagnavn is a constant and should be defined at module level
dagnavn = ['Mandag', 'Tirsdag', 'Onsdag', 'Torsdag', 'Fredag', u'Lørdag', u'Søndag']


def get_schedule(date):
    weekday = date.weekday()
    dag = dagnavn[weekday]
    imorgen = dagnavn[(weekday + 1) % 7]
    daginfo = {
        'Mandag': "Matte\n" + "Naturfag\n" + "Engelsk\n" + "ToF\n",
        ...
    }[dag]
    return dag, imorgen, daginfo

那么您将删除filerino()中的long if语句，并将其替换为：

dag, imorgen, daginfo = get_schedule(today)  # still assuming you've created the `today` variable

如果您继续将这样的代码“单元”引入其自己的函数中，那么最终您将得到一个小得多的函数，它会出现您的问题。 那是较小的功能，通常是您在SO问题（演示您的问题的最小代码段）中发布的内容。