用Python编写一个文本文件(writing item in a text file in python)

 我有一个程序可以执行以下操作。 
 
 
 
 你输入一个输入 
 
 
 
 
python 1.txt apple 5
python 1.txt orange 18
 
 
 
 
 它会在文本文件中写入项目和数量作为修改后的文本文件的示例 
 
 
 
 
apple : 5
orange : 18
 
 
 
 
 它也检查重复，然后添加数量与现有的金额，如果存在像 - 
 
 
 
 
python 1.txt apple 5
 
 
apple : 10
orange : 18
 
 问题：如果该项目不存在于文本文件中或未被复制，请将该项目添加到文本文件中。 目前这不起作用 
 
 这是我写的 - 
 
import sys

def maj(texte, item, nombre):
    with open(texte, "r") as f_in:
        lecture = f_in.readlines()
        with open(texte, "w") as ouvrir:
            for line in lecture:
                line = line.strip("\n")
                mot, chiffre = line.split(" : ")[0].strip(" "), int(line.split(" : ")[1].strip(" "))
                if mot == item:
                    ouvrir.write("%s : %s" "\n" % (item, str(chiffre + int(nombre))))
                    ouvrir.close()
                else:
                    ouvrir.write("%s : %s" "\n" % (mot, chiffre))
                    ouvrir.close()
def main():
    entree = sys.argv[1]
    item = sys.argv[2]
    nombre = sys.argv[3]
    choix = str(entree)
    texte = choix.strip("[']")
    maj(texte, item, nombre)

if __name__ == "__main__":
    main()

I have a program that does the following.
 
 
 
you enter an input 
 
 
 
 
python 1.txt apple 5
python 1.txt orange 18
 
 
 
 
it will write the item and amount in the text file an example of the modified text file
 
 
 
 
apple : 5
orange : 18
 
 
 
 
it is also checking for duplicate then add the amount with the existing amount if present like-
 
 
 
 
python 1.txt apple 5
 
 
apple : 10
orange : 18
 
Problem: if the item doesn't exist in the text file or is not duplicated, add the item in the text file. At the moment this doesn't work
 
Here is what I have written-
 
import sys

def maj(texte, item, nombre):
    with open(texte, "r") as f_in:
        lecture = f_in.readlines()
        with open(texte, "w") as ouvrir:
            for line in lecture:
                line = line.strip("\n")
                mot, chiffre = line.split(" : ")[0].strip(" "), int(line.split(" : ")[1].strip(" "))
                if mot == item:
                    ouvrir.write("%s : %s" "\n" % (item, str(chiffre + int(nombre))))
                    ouvrir.close()
                else:
                    ouvrir.write("%s : %s" "\n" % (mot, chiffre))
                    ouvrir.close()
def main():
    entree = sys.argv[1]
    item = sys.argv[2]
    nombre = sys.argv[3]
    choix = str(entree)
    texte = choix.strip("[']")
    maj(texte, item, nombre)

if __name__ == "__main__":
    main()

原文：https://stackoverflow.com/questions/43672021