a challenging project idea

[Skaperen]

this is not a joke. it is currently in perl. the "rename" command that i use in linux, although making it work in windows is ok.

[nilamo]

https://docs.python.org/3/library/pathli...ath.rename

import pathlib

def rename(fname, to):
    pathlib.Path(fname).rename(to)

if __name__ == "__main__":
    import sys
    if len(sys.argv) >= 3:
        fname, to = sys.argv[1:3]
        rename(fname, to)
    else:
        print("rename.py: [from] [to]")

[Skaperen]

it does not seem to work as a rename command:

Output:
lt2a/forums /home/forums 1> box rename.py
+---<rename.py>---------------------------+
| import pathlib                          |
|                                         |
| def rename(fname, to):                  |
|     pathlib.Path(fname).rename(to)      |
|                                         |
| if __name__ == "__main__":              |
|     import sys                          |
|     if len(sys.argv) >= 3:              |
|         fname, to = sys.argv[1:3]       |
|         rename(fname, to)               |
|     else:                               |
|         print("rename.py: [from] [to]") |
+-----------------------------------------+
lt2a/forums /home/forums 2> ls -dl foo food
/bin/ls: cannot access 'foo': No such file or directory
/bin/ls: cannot access 'food': No such file or directory
lt2a/forums /home/forums 3> touch foo
lt2a/forums /home/forums 4> ls -dl foo food
/bin/ls: cannot access 'food': No such file or directory
-rw-r--r-- 1 forums forums 0 Apr  2 23:25 foo
lt2a/forums /home/forums 5> py3 rename.py 's/foo/food' foo
Traceback (most recent call last):
  File "rename.py", line 10, in <module>
    rename(fname, to)
  File "rename.py", line 4, in rename
    pathlib.Path(fname).rename(to)
  File "/usr/lib/python3.5/pathlib.py", line 1279, in rename
    self._accessor.rename(self, target)
  File "/usr/lib/python3.5/pathlib.py", line 377, in wrapped
    return strfunc(str(pathobjA), str(pathobjB), *args)
FileNotFoundError: [Errno 2] No such file or directory: 's/foo/food' -> 'foo'
lt2a/forums /home/forums 6>

[nilamo]

https://linux.die.net/man/1/rename

So it's more complicated than just an alias for mv. I didn't realize it was basically sed but for file names.

[Skaperen]

that's what makes it challenging. the implementation in Ubuntu is in Perl. i figured if Python had PCRE support, then it might be doable.