[英]“IOError: [Errno 0] Error” error in Python
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]
引用Python文件操作的答案,当在Windows上进行读写切换时,必须有介入的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)
, 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。
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