Question

我正在尝试创建两个程序，一个将数据写入文件golf.txt，第二个程序从golf.txt读取记录并显示它们。当我将输入字段留空时，我试图让程序退出的第一个程序。这是第一个程序的代码。

#Program that reads each player's name and golf score as input
#Save to golf.txt
outfile = open('golf.txt', 'w')

#Enter input, leave blank to quit program
while True:
    name = input("Player's name(leave blank to quit):")
    score = input("Player's score(leave blank to quit):")
    if input ==" ":
        break

#write to file golf.txt
outfile.write(name + "\n")

outfile.write(str(score) + "\n")

outfile.close()

使用第二个程序，我无法让程序在一行上显示我想要的输出。这是第二个项目。

#Golf Scores

# main module/function
def main():

# opens the "golf.txt" file created in the Golf Player Input python
# in read-only mode
    infile = open('golf.txt', 'r')
# reads the player array from the file
    player = infile.read()
# reads the score array from the file
    score = infile.read()
# prints the names and scores

    print(player + "scored a" + score)

# closes the file    
    infile.close()

# calls main function
main()

我将非常感谢您提供的任何帮助或建议。

Answer 1

两个主要问题：

1。）你的第一个代码有if input == ' '，这在两个方面有误：

input是一个功能。您已保存输入，因此您应该与name和score进行比较。

当您不输入任何内容时，

input会返回''。

所以改为：' '甚至是if name == '' or score == '':（做同样的事情）

2。）if '' in (name,score):将自动将文件中的所有内容读作一个字符串。您希望将其拆分为每个组件，以便您可以执行以下操作：

file.read()

或

player,score = file.readlines()[:2]

然后打印（中间字符串中有前导和尾随空格！）

player = file.readline()
score = file.readline()

Answer 2

让两个程序都正常工作

计划1：

#Program that reads each player's name and golf score as input
#Save to golf.txt
outfile = open('golf.txt', 'w')

#Enter input, leave blank to quit program
while True:
    name = input("Player's name(leave blank to quit):")
    if name == "":
        break
    score = input("Player's score:")

#write to file golf.txt
    outfile.write(name + "\n")

    outfile.write(str(score) + "\n")

outfile.close()

计划2：

#Golf Scores

# main module/function
def main():

# opens the "golf.txt" file created in the Golf Player Input python
# in read-only mode
    infile = open('golf.txt', 'r')

# reads the player array from the file
    name = infile.readline()

    while name != '':

# reads the score array from the file
        score = infile.readline()

# strip newline from field
        name = name.rstrip('\n')
        score = score.rstrip('\n')
# prints the names and scores
        print(name + " scored a " + score)

# read the name field of next record
        name = infile.readline()

# closes the file    
    infile.close()

# calls main function
main()

Answer 3

在检查之前消除input的空格（我会使用.strip()方法）。并将其与空字符串""进行比较，而不是空格" "。

Answer 4

使用“while true”区块，你不断询问并取名字和分数，但是你会覆盖它们，所以你总是只有最后一对。

您需要保留所有内容，以便列出清单：

names_and_scores = []

while True:
    name = input("Player's name(leave blank to quit):").strip()
    if name == "":
        break
    score = input("Player's score:").strip()
    if name != "" and score != "":
        names_and_scores.append("{}; {}".format(name, score))

with open('golf.txt', 'w') as outfile:
    outfile.write("\n".join(names_and_scores))

第二个程序打开文件，逐行读取，拆分并打印：

with open('golf.txt', 'r') as infile:
    for line in infile:
        name, score = line.strip().split("; ")
        print("{} scored a {}.".format(name, score))

高尔夫得分python程序

4 个答案: