问题描述
引用Python文件操作的答案,在Windows上进行读写之间切换时,必须有一个中间的fflush,fsetpos,fseek或rewind操作。
这是一个可能的解决方法:
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)
在中f.seek(0,2)
,2
是from_what
参数。甲from_what
的值0
从文件的开头的措施,1
使用当前文件的位置,并2
使用该文件作为参考点的端部。from_what
可以省略,默认为0
,使用文件的开头作为参考点。
解决方法
我有一个脚本,应该将某些内容附加到文件中,但是它引发了一个我不理解的错误,并且不确定如何触发该错误。
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]