Python：从文件读取时出现语法错误
我正在从文件中读取数据。数据文件中的大部分数据将不经修改地被读入和写出到输出文件。然而，在某些地方，数据被空行分隔，该空行位于其他 5 个无用行之前。这是我的代码：
#Now loop over the entire file
while True:
testline = infile.readline()
if len(testline) ==0:
break # EOF
elseif testline == '\n':
for i in range(0,5)
testline = infile.readline()
else:
outfile.write(testline)
我收到以下错误，这让我感到困惑：
File "convert.py", line 31
elseif testline == '\n':
^
SyntaxError: invalid syntax
有什么想法吗？我无法弄清楚我的 elseif 语句有什么问题。
I'm reading data from a file. Most of the data in the data file will be read in and written out to an output file without modification. However, in places the data is separated by a blank line, which precedes 5 other useless lines. Here is my code:
#Now loop over the entire file
while True:
testline = infile.readline()
if len(testline) ==0:
break # EOF
elseif testline == '\n':
for i in range(0,5)
testline = infile.readline()
else:
outfile.write(testline)
I get the following error that has me stumped:
File "convert.py", line 31
elseif testline == '\n':
^
SyntaxError: invalid syntax
Any thoughts? I can't figure out what is wrong with my elseif statement.
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评论（4）
它不是 Python 中的
elseif，而是elif。It isn't
elseifin python, it'selif.其他人指出它是
elif。另外，您在for语句末尾缺少一个冒号，Python 可能会抱怨以下行。因此，现在您不必再回来为此提出单独的问题。 :-)如果您只想迭代文件中的行，更好的方法是：
您不必以这种方式检查文件结尾，因为当您到达时循环会自动结束文件末尾。
Others have pointed out it's
elif. Also, you're missing a colon at the end of yourforstatement, and Python will probably complain about the following line. So now you don't have to come back and ask a separate question for that. :-)If you just want to iterate over the lines in a file, though, a better way to do this is:
You don't have to check for the end-of-file that way because the loop automatically ends when you reach the end of the file.
您正在寻找的不是“elseif”，而是“elif”。
此外，在 for 循环的末尾还有另一个拼写错误
for i in range(0,5)它需要在末尾有一个 : 。It isn't 'elseif' it is 'elif' that you are looking for.
Furthermore there is another typo at the end of your for loop
for i in range(0,5)it needs a : at the end there.您可以随时尝试将
elseif更改为elif并且您的缩进从第二行开始填充
You could always try changing
elseiftoelifAnd your indentation is stuffed from the 2nd line onwards