Question

我需要根据用户输入添加到.csv文件。代码的其他部分添加到文件中，但我不知道如何添加用户输入。我是python和编码的新手。

我的代码的其他部分可以合并或从.csv数据库中提取数据并将其写入单独的文件，但无法弄清楚如何通过多个用户输入将其写入或追加到文件中。外发文件。

def manualentry():
        stock = input("Enter Stock #: ") #Generate data for each column to fill in to the output file.
        VIN = input("Enter Full VIN: ") #Each line asks the user to add data do the line.
        make = input("Enter Make: ")
        model = input("Enter Model: ")
        year = input("Enter Year: ")
        l8v = input("Enter L8V: ")
        print(stock, VIN, make, model, year, l8v) #Prints the line of user data
        input4 = input("Append to inventory list? Y/N") #Asks user to append the data to the output file.
        if input4 == "Y" or input4 == "y":
            with open('INV.csv','a', newline='') as outfile: #Pull up a seperate csv to write to, an output for collected data
                w = csv.writer(outfile) #Need to write the user input to the .csv file.
                w.writerow([stock, VIN, make, model, year, l8v]) #<-This is the portion that seems to fall apart.
                print("INVENTORY UPDATED")
                starter() #Restarts whole program from begining.
        if input4 == "N" or input4 == "n":
            print("SKIPPING. RESTARTING....")            
            starter() #Reset
        else:
            print("Invalid entry restarting program.")
            starter() #Reset
starter() #R E S E T !

只需要将用户输入应用于.csv并保存在此即可。这段代码的早期部分可以正常运行，但可以添加到.csv文件中。是要填写丢失的数据，否则这些数据将不会在单独的数据库中列出。

Answer 1

代码有一些改进。

您可以使用循环条件，例如while或for来代替递归
您可以在代码开头打开csv文件，而不是每次都打开
您可以提出一个stop来停止循环，关闭文件并退出
您可以使用str.lower() == 'y'来覆盖y和Y的大小写形式

代码将如下所示

import csv

def manualentry():

    #Open csv file at start
    outfile = open('INV.csv', 'a', newline='')
    w = csv.writer(outfile)  # Need to write the user input to the .csv file.

    #Everything wrapped in a while True loop, you can change to any loop accordingly
    while True:
        stock = input("Enter Stock #: ")  # Generate data for each column to fill in to the output file.
        VIN = input("Enter Full VIN: ")  # Each line asks the user to add data do the line.
        make = input("Enter Make: ")
        model = input("Enter Model: ")
        year = input("Enter Year: ")
        l8v = input("Enter L8V: ")
        print(stock, VIN, make, model, year, l8v)  # Prints the line of user data
        input4 = input("Append to inventory list? Y/N")  # Asks user to append the data to the output file.
        if input4.lower() == "y":
            w.writerow([stock, VIN, make, model, year, l8v])  # <-This is the portion that seems to fall apart.
            print("INVENTORY UPDATED")
        if input4.lower() == "n":
            print("SKIPPING. RESTARTING....")
        #If you see stop, stop writing, close the file and exit
        if input4.lower() == 'stop':
            print('Not writing anymore! Stopping')
            outfile.close()
            exit()
        else:
            print("Invalid entry restarting program.")


#Call manualentry
manualentry()

Answer 2

您可以简单地使用用户控制的while循环来递归地获取用户输入，然后可以根据用户选择退出

user_input = 'Y'
while user_input.lower() == 'y':
    # Run your code here
    user_input = input('Do you want to add one more entry: Enter [Y/N]')

Answer 3

尝试一下

RowsAffected

根据用户输入构建.csv

3 个答案: