Python中的“IOError：[Errno 0] Error”错误

我有一个脚本应该附加到文件的东西,但它引发了一个我不理解的错误,不知道它是如何被触发的.

这是代码：

import re

num_words = "four kiddiewinks|four children|four kids"
words_list = num_words.split('|')

def append_2synonym(words_list, num_words):
    with open('test2 words.txt', 'a+') as f:
        read_f = f.read()
        patt = r'^' + words_list[0] + '\|'
        result = re.search(patt, read_f, re.MULTILINE)
        if result == None:
            f.write("\n" + num_words)
        else:
            print "\nNo match found in '2 words.txt' file"

append_2synonym(words_list, num_words)

这是’test2 words.txt’文件的内容：

five kiddiewinks|five kids|five children
mobile phone|cell phone|cellular phone
stinky cheese|smelly cheese

这是我得到的完整错误：

Traceback (most recent call last):
  File "D:\Magic Briefcase\My Python Scripts\Spin Scripts\synonyms\testing2.py", line 16, in <module>
    append_2synonym(words_list, num_words)
  File "D:\Magic Briefcase\My Python Scripts\Spin Scripts\synonyms\testing2.py", line 12, in append_2synonym
    f.write("\n" + num_words)
IOError: [Errno 0] Error
[Finished in 0.1s with exit code 1]

解决方法:

从Python file operations引用答案,当在Windows上进行读写切换时,必须进行干预fflush,fsetpos,fseek或倒带操作.

这是一个可能的解决方案：

import re

num_words = "four kiddiewinks|four children|four kids"
words_list = num_words.split('|')

def append_2synonym(words_list, num_words):
    with open('test2 words.txt', 'a+') as f:
        read_f = f.read()
        patt = r'^' + words_list[0] + '\|'
        result = re.search(patt, read_f, re.MULTILINE)
        if result == None:
            f.seek(0,2) # change is here !!
            f.write("\n" + num_words)
        else:
            print "\nNo match found in '2 words.txt' file"

append_2synonym(words_list, num_words)

在f.seek(0,2)中,2是from_what参数. from_what值为0,从文件开头开始,1使用当前文件位置,2使用文件末尾作为参考点. from_what可以省略,默认为0,使用文件的开头作为参考点.

标签：python,regex,runtime-error
来源： https://codeday.me/bug/20190926/1819643.html