Python MadLib。NameError

Question

我是一个初级的python程序员，为课堂编写了一个madlib程序。我要求程序从文件中读取，然后在"[]“中找到需要替换的单词。我要求用户给我提供单词，然后尝试替换它们。然而，当我尝试line.replace(“名词”，名词)时，它会给我一个错误：

"NameError:未定义名称'line‘“

这是我的代码：

def madLibOne():
    #Function opens up a file that contains the madlib.
    madLib1 = open('MadLibOne.txt', 'r')
    madLib1.readline()
    #Reads the file and asks user for input in what type of words they want inputted.
    weekday = input("Enter a weekday: ")
    adjective = input("Enter an adjective: ")
    food = input("Enter a food: ")
    location = input("Enter a location: ")
    favoriteprof = input("Enter the name of your favorite Proffessor: ")
    sumOfMoney = eval(input("Enter a sum of money: "))
    #Itterates through the file and replaces all words with user input
    for i in madLib1:
        line.replace("[weekday]",weekday)
        line.replace("[adjective]",adjective)
        line.replace("[food]",food)
        line.replace("[location]",location)
        line.replace("[favoriteProf]",favoriteprof)
        line.replace("[sumOfMoney]",sumOfMoney)
    #closes file
    madLib1.close()

有人能帮我找出我做错了什么吗？谢谢

编辑

好的，我用line替换了line变量，现在当我运行它的时候

"TypeError:不能将'int‘对象隐式转换为str

因为数字不能用于字符串..。这次又是什么？

编辑2

def madLibOne():
#Function opens up a file that contains the madlib.
madLib1 = open('MadLibOne.txt', 'r')
madLib1.readline()
#Reads the file and asks user for input in what type of words they want inputted.
weekday = str(input("Enter a weekday: "))
adjective = str(input("Enter an adjective: "))
food = str(input("Enter a food: "))
location = str(input("Enter a location: "))
favoriteprof = str(input("Enter the name of your favorite Proffessor: "))
sumOfMoney = str(input("Enter a sum of money: "))
#Itterates through the file and replaces all words with user input
for line in madLib1:
    line = line.replace("[weekday]",weekday)
    line = line.replace("[adjective]",adjective)
    line = line.replace("[food]",food)
    line = line.replace("[location]",location)
    line = line.replace("[favoriteProf]",favoriteprof)
    line = line.replace("[sumOfMoney]",sumOfMoney)
#closes file
madLib1.close()

当我运行这个时，我没有错误，但是文件仍然和以前一样.

编辑3

对于每个给我提供如何打开和读取文件的建议的人来说，我现在有了这样的帮助:如何将用户提供的输入保存到文件中，以便以后可以读取它，或者创建一个新的文件。

下面是文本文件看起来像http://prntscr.com/7hlyag的样子

Answer 1

迭代变量是名称i，而不是line。

似乎你想从文件中读取并写入文件。这是最简单的方法：

import fileinput
weekday = input("Enter a weekday: ")
adjective = input("Enter an adjective: ")
food = input("Enter a food: ")
location = str(input("Enter a location: "))
favoriteprof = input("Enter the name of your favorite Professor: ")
sumOfMoney = str(input("Enter a sum of money: "))
for line in fileinput.FileInput("MadLibOne.txt",inplace=1):
    line = line.replace("[weekday]",weekday)
    line = line.replace("[adjective]",adjective)
    line = line.replace("[food]",food)
    line = line.replace("[location]",location)
    line = line.replace("[favoriteProf]",favoriteprof)
    line = line.replace("[sumOfMoney]",sumOfMoney)
    print line

另一种选择是：

weekday = input("Enter a weekday: ")
adjective = input("Enter an adjective: ")
food = str(input("Enter a food: "))
location = str(input("Enter a location: "))
favoriteprof = str(input("Enter the name of your favorite Proffessor: "))
sumOfMoney = str(eval(input("Enter a sum of money: ")))

#Values are:
# weekday = "Sunday"
# adjective = "Fun"
# food = "Beef"
# location = "Here"
# favoriteprof = "Kurland"
# sumOfMoney = "217"

with open('MadLibOne.txt', 'r') as madLib1:
    with open('MadLibOne_new.txt', 'w') as madLib1_new:
        for line in madLib1:
            line = line.replace("[weekday]",weekday)
            line = line.replace("[adjective]",adjective)
            line = line.replace("[food]",food)
            line = line.replace("[location]",location)
            line = line.replace("[favoriteprof]",favoriteprof)
            line = line.replace("[sumOfMoney]",sumOfMoney)
            madLib1_new.writelines(line)

文本文件包含：

“你好吗？”今天是星期天！这很有趣。我喜欢吃牛肉，而我喜欢动词。我本该在课堂上，但我在这里。我的忏悔者是库兰。他欠我217英镑。

别忘了纠正教授的错误，并替换[verb]

Answer 2

我建议您使用带语句打开一个文件。

from __future__ import with_statement #if you are using python2

def madLibOne():
    words = ["[weekday]","[adjective]","[food]","[location]","[favoriteProf]","[sumOfMoney]"]
    weekday = str(input("Enter a weekday: "))
    adjective = str(input("Enter an adjective: "))
    food = str(input("Enter a food: "))
    location = str(input("Enter a location: "))
    favoriteprof = str(input("Enter the name of your favorite Proffessor: "))
    sumOfMoney = str(input("Enter a sum of money: "))
    #Open the file
    with open('MadLibOne.txt', 'r') as f:
        with open('output.txt', 'w') as o:
            #Iterate over each line
            for line in f:
                newline = line
                newline = newline.replace("[weekday]",weekday)
                newline = newline.replace("[adjective]",adjective)
                newline = newline.replace("[food]",food)
                newline = newline.replace("[location]",location)
                newline = newline.replace("[favoriteProf]",favoriteprof)
                newline = newline.replace("[sumOfMoney]",sumOfMoney)
                o.write(newline)

此外，您的函数接缝是不完整的，在替换文本之后，您可能希望将其保存在某个地方，但该部分在您的函数中完全丢失。