Rename an environment with virtualenvwrapper


I have an environment called doors and I would like to rename it to django for the virtualenvwrapper.

I"ve noticed that if I just rename the folder ~/.virtualenvs/doors to django, I can now call workon django, but the environment still says (doors)[email protected].

Rename an environment with virtualenvwrapper rename: Questions

Rename a dictionary key

5 answers

Is there a way to rename a dictionary key, without reassigning its value to a new name and removing the old name key; and without iterating through dict key/value?

In case of OrderedDict, do the same, while keeping that key"s position.


Answer #1

For a regular dict, you can use:

mydict[k_new] = mydict.pop(k_old)

This will move the item to the end of the dict, unless k_new was already existing in which case it will overwrite the value in-place.

For a Python 3.7+ dict where you additionally want to preserve the ordering, the simplest is to rebuild an entirely new instance. For example, renaming key 2 to "two":

>>> d = {0:0, 1:1, 2:2, 3:3}
>>> {"two" if k == 2 else k:v for k,v in d.items()}
{0: 0, 1: 1, "two": 2, 3: 3}

The same is true for an OrderedDict, where you can"t use dict comprehension syntax, but you can use a generator expression:

OrderedDict((k_new if k == k_old else k, v) for k, v in od.items())

Modifying the key itself, as the question asks for, is impractical because keys are hashable which usually implies they"re immutable and can"t be modified.

How to rename a file using Python

5 answers

I want to change a.txt to b.kml.


Answer #1

Use os.rename:

import os

os.rename("a.txt", "b.kml")

Rename multiple files in a directory in Python

5 answers

I"m trying to rename some files in a directory using Python.

Say I have a file called CHEESE_CHEESE_TYPE.*** and want to remove CHEESE_ so my resulting filename would be CHEESE_TYPE

I"m trying to use the os.path.split but it"s not working properly. I have also considered using string manipulations, but have not been successful with that either.


Answer #1

Use os.rename(src, dst) to rename or move a file or a directory.

$ ls
$ python
>>> import os
>>> for filename in os.listdir("."):
...  if filename.startswith("cheese_"):
...    os.rename(filename, filename[7:])
$ ls

Rename an environment with virtualenvwrapper StackOverflow: Questions


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