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Detailed explanation of commonly used methods for file directories in os and os.path modules
Detailed explanation of commonly used methods for file directories in os and os.path modules
Python is a cross-platform language, which means that the same source code can be implemented equally on different operating systems without modification.
With OS module, we don’t need to worry about which module is used under which operating system. The OS module will help you choose the correct module and call it.
| ##FunctionName | Usage method | |
| getcwd () | Return to the current working directory||
| chdir(path) | Change the working directory||
| listdir(path='.') | List the file names in the specified directory ('. ' represents the current directory, '..' represents the upper-level directory)||
| mkdir(path) | Create a single-level directory, such as The directory already exists | Throws exception |
| makedirs(path) | RecursiveCreate Multi-level directories, if the directory already exists, an exception will be thrown. Note: 'E:\\a\\b' and 'E:\\a\\c' will not conflict | |
| remove(path) | Delete file | |
| rmdir(path) | Delete a single-level directory. If the directory is not empty, an exception will be thrown. | |
| removedirs(path) | Recursion Delete the directory and try to delete it layer by layer from the subdirectory to the parent directory. If the directory is not empty, an exception will be thrown | |
| rename(old, | new ) | Rename the file old to new|
| system(command) | Command to run the system | |
| walk( | top) | Traverse all subdirectories below the top path and return a triple: (path, [include directory], [include file])
The following are some definitions commonly used in supporting path operations, supporting all platforms
| ##Function name | Usage | |
| os.curdir | Refers to the current directory ('.') | |
| os.pardir | Refers to the upper-level directory ('..') | |
| os.sep | Output operating system-specific path separator ('\\' under Win, | Linuxis '/') |
| os.linesep | The line terminator used by the current platform (it is '\r under Win \n', '\n' under Linux) | |
| os.name | refers to the currently used operating system |
| Number | Function name | Usage method |
| 1 | basename(path) | Remove the directory path and return the file name alone |
| 2 | dirname(path) | Remove the file name and return the directory path alone |
| 3 | join(path1[, path2[, ...]]) | Combine the parts of path1 and path2 into a path name |
| 4 | split(path) | Split the file name and path and return the (f_path, f_name) tuple. If the directory is used entirely, it will also split the last directory as a file name and will not determine whether the file or directory exists |
| 5 | splitext(path) | Separate the file name and extension and return the (f_name, f_extension) tuple |
| getsize(file) | Return Specify the size of the file in bytes | |
| getatime(file) | Returns the latest access time of the specified file ( | float Point type seconds, you can use the gmtime() or localtime() function of the time module to convert) |
| getctime(file ) | Returns the creation time of the specified file (floating point seconds, which can be converted using the gmtime() or localtime() function of the time module) | |
| getmtime(file) | Returns the latest modification time of the specified file (floating point seconds, which can be converted by the gmtime() or localtime() function of the time module) |
The following functions return True or False
| ##Function name | Usage method | 1 |
| Determine whether the specified path (directory or file) exists | 2 | |
| Judge whether the specified path is an absolute path | 3 | |
| Judge the specified path Whether it exists and is a directory | 4 | |
| Determine whether the specified path exists and is a file | 5 | |
| Determine whether the specified path exists and is a symbolic link | 6 | |
| Determine whether the specified path exists and is a mount point | 7 | |
| Determine whether path1 and path2 point to the same file |
The above is the detailed content of Detailed explanation of commonly used methods for file directories in os and os.path modules. For more information, please follow other related articles on the PHP Chinese website!
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