Question

我正在编写一个程序，通过该程序我可以从文件中提取数据，然后根据某些条件，我必须将该数据写入其他文件。这些文件不存在，只有代码才会创建这些新文件。我已经尝试了所有可能的打印参数组合，但没有任何帮助。该程序似乎运行良好，IDLE没有错误，但没有创建新文件。有人可以给我一个解决方案吗？

这是我的代码：

try:
    data= open('sketch.txt')
    for x in data:
        try:
            (person, sentence)= x.split(':',1)"""data is in form of sentences with: symbol present"""
            man=[]      # list to store person 
            other=[]     #list to store sentence
            if person=="Man":
                man.append(sentence)
            elif person=="Other Man":
                other.append(sentence)
        except ValueError:
            pass
    data.close()
except IOError:
    print("file not found")
    try:
        man_file=open("man_file.txt","w")""" otherman_file and man_file are for storing data"""
        otherman_file=open("otherman_file.txt", "w")
        print(man,file= man_file.txt)
        print(other, file=otherman_file.txt)
        man_file.close()
        otherman_file.close()
    except IOError:
        print ("file error")

Answer 1

2个问题

你应该使用

 man_file = open("man_file.txt", "w+")
otherman_file = open("otherman_file.txt", "w+")

w + - 如果文件不存在则创建文件并在写入模式下打开

模式'r +'，'w +'和'a +'打开文件进行更新（读写）;请注意'w +'截断文件..

https://docs.python.org/2/library/functions.html

2

  print(man,file= man_file.txt)
  print(other, file=otherman_file.txt)

如果sketch.txt文件不存在，那么“man”和“other”将不会被初始化并且在print方法中会抛出另一个异常

尝试运行此脚本

def func():
    man = []      # list to store person
    other = []  # list to store sentence
    try:
        data = open('sketch.txt', 'r')
        for x in data:
            try:
                (person, sentence) = x.split(':', 1)

                if person == "Man":
                    man.append(sentence)
                elif person == "Other Man":
                    other.append(sentence)
            except ValueError:
                pass
        data.close()
    except IOError:
        print("file not found")
    try:
        man_file = open("man_file.txt", "w+")
        otherman_file = open("otherman_file.txt", "w+")
    #        print(man, man_file.txt)
    #       print(other, otherman_file.txt)
        man_file.close()
        otherman_file.close()
    except IOError:
        print ("file error")


func()

如何让我的python程序编写新文件

1 个答案: