2011/10/23 水静流深 <1248283...@qq.com>:
<snip>
> book=open('c:\'+str1,'w') # i change it
<snip>> when i run it in python32,the output is :
> book=open('c:\'+str1,'w')
> invalid syntax,what is wrong?
Your problem is not at all Python 3-specific.
Backslashes are used for escape sequences in string literals (e.g.
"\n" is newline, "\t" is tab). For example, the string "c:\new\tally"
contains both a newline and a tab, but not an N, nor a T, nor any
backslashes (a literal backslash is written using the escape sequence
"\\"; i.e. two backslashes).
Similarly, "\'" is an escape sequence for apostrophe, and thus does
not terminate the string literal, leading to a not entirely obvious
SyntaxError.
Use forward slashes (/) instead; Windows accepts them instead of
backslashes as directory separators in path strings, and they have no
such escaping issues.
Cheers,
Chris
--
Damn you, CP/M!
http://rebertia.com
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