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| -rw-r--r-- | Misc/FAQ | 17 |
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@@ -179,6 +179,7 @@ Here's an overview of the questions per chapter: 4.39. Q. How to implement persistent objects in Python? (Persistent == automatically saved to and restored from disk.) 4.40. Q. I try to use __spam and I get an error about _SomeClassName__spam. + 4.41. Q. How do I delete a file? And other file questions. 5. Extending Python 5.1. Q. Can I create my own functions in C? @@ -1708,6 +1709,22 @@ A. Variables with double leading underscore are "mangled" to provide a simple but effective way to define class private variables. See the chapter "New in Release 1.4" in the Python Tutorial. +4.41. Q. How do I delete a file? And other file questions. + +A. Use os.remove(filename) or os.unlink(filename); for documentation, +see the posix section of the library manual. They are the same, +unlink() is simply the Unix name for this function. In earlier +versions of Python, only os.unlink() was available. + +To remove a directory, use os.rmdir(); use os.mkdir() to create one. + +To rename a file, use os.rename(). + +To truncate a file, open it using f = open(filename, "w+"), and use +f.truncate(offset); offset defaults to the current seek position. +There's also os.ftruncate(fd, offset) for files opened with os.open() +-- for advanced Unix hacks only. + 5. Extending Python =================== |