How to freeze a requirement with pipenv?

Question

For example we have some pipfile (below) and I'd like to freeze the django version. We don't have a requirements.txt and we only use pipenv. How can I freeze the django version?

[[source]]
url = "https://pypi.org/simple"
verify_ssl = true
name = "pypi"

[packages]
django = "*"

[dev-packages]
black = "*"

[requires]
python_version = "3.6"

score 112 · Accepted Answer · answered Jan 23 '19 at 19:25

112

Pipenv do natively implement freezing requirements.txt. It is as simple as:

pipenv lock -r > requirements.txt

answered Jan 23 '19 at 19:25

Aratz Manterola Lasa

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65

This method is deprecated, we should use `pipenv requirements > requirements.txt` instead, see https://pipenv.pypa.io/en/latest/advanced/#generating-a-requirements-txt and [ARDVL's answer](https://stackoverflow.com/a/72684458/322283). – Marijn Jul 26 '22 at 05:26

score 76 · Answer 2 · answered Aug 14 '22 at 14:59

76

As of v2022.8.13 of pipenv, the "old" lock -r functionality has been removed.

Going forward, this should be accomplished with:

pipenv requirements > requirements.txt

answered Aug 14 '22 at 14:59

Collin Heist

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This should become the new accepted answer. – Laurin Herbsthofer Jun 14 '23 at 14:29

score 29 · Answer 3 · answered Jun 28 '19 at 07:15

Assuming you have your virtual environment activated, you have three simple approaches. I will list them from less verbose to more verbose.

pip

$ pip freeze > requirements.txt

pip3

$ pip3 freeze > requirements.txt

If a virtual environment is active, pip is most certainly equivalent to pip3.

pipenv run

$ pipenv run pip freeze > requirements.txt
$ pipenv run pip3 freeze > requirements.txt

pipenv run spawns a command installed into the virtual environment, so these commands are equivalent to the ones run without pipenv run. Once again, it is assumed that your virtual environment is active.

score 16 · Answer 4 · answered Jun 20 '22 at 08:50

Recent pipenv versions (e.g. version 2022.6.7) are using the requirements subcommand and pipenv lock -r is deprecated.

To freeze default dependencies

pipenv requirements > requirements.txt

to freeze development dependencies as well

pipenv requirements --dev > dev-requirements.txt

score 12 · Answer 5 · answered May 01 '19 at 16:38

12

By using run You can run given command from virtualenv, with any arguments forwarded

$ pipenv run pip freeze  > requirements.txt

answered May 01 '19 at 16:38

bkawan

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It gave `FileNotFoundError: [Errno 2] No such file or directory` trying to look for pip file in the .venv directory for the respective project. Instead following worked for me : `pipenv run python -m pip freeze > requirements.txt` – Dhwanit Dec 03 '22 at 15:26

score 1 · Answer 6 · edited Jun 11 '21 at 11:45

1

It's as simple as changing django = "*" to django = "your-preferred-version". So if you wanted to freeze it to 2.1, the latest release at the time of this writing, you could do this:

[packages]
django="2.1"

The pipfile Git repo has some good examples of different ways to specify version strings: https://github.com/pypa/pipfile#pipfile

Note that when you generate a lockfile from your pipfile, that lockfile is actually the file that's supposed to "freeze" your dependency to a specific version. That way, you don't have to concern yourself with which version works with your code, since by distributing the lockfile everyone else must use the same dependency versions as you. The developers of pipenv intended for developers to use it like this

edited Jun 11 '21 at 11:45

Joël Brigate

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answered Aug 14 '18 at 19:18

Zach Bloomquist

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Is there a way to do this through pipenv? Or do I have to open up the pipfile myself? – arshbot Aug 14 '18 at 20:33
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That's weird, it's an `==` sign – arshbot Aug 14 '18 at 20:43
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This answer did not work for me (regarding the `Pipfile`. What worked for me was `django = "==2.1"`. – Torsten Engelbrecht Sep 28 '18 at 06:56

score 0 · Answer 7 · answered Sep 08 '20 at 11:38

0

first, you ensure that your virtual environment is active then you open the terminal and run the command pip3 freeze > reqirements.txt (pip3) pip3 freeze > reqirements.txt (pip3)

answered Sep 08 '20 at 11:38

Prakash Chandra Muduli

1

score 0 · Answer 8 · answered Dec 31 '20 at 12:31

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This is the way that I was prompted by pipenv to generate a requirements.txt file from the project's Pipfile:

pipenv lock --requirements

answered Dec 31 '20 at 12:31

Chris Claude

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tried this but didn't work `Error: No such option: --requirements Did you mean --quiet?` – Dhwanit Dec 03 '22 at 15:19

score 0 · Answer 9 · answered Oct 18 '22 at 10:39

0

Use this as -r flag is deprecated

pipenv requirements > requirements.txt

answered Oct 18 '22 at 10:39

akshay parkar

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score 0 · Answer 10 · answered Dec 03 '22 at 15:23

0

pipenv run python -m pip freeze > requirements.txt

answered Dec 03 '22 at 15:23

Dhwanit

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score -4 · Answer 11 · edited Mar 06 '19 at 17:40

-4

You can create a requirements.txt using this command :

pip3 freeze > requirements.txt

edited Mar 06 '19 at 17:40

Arnav Borborah

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answered Feb 02 '19 at 01:55

Alouani Younes

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How to freeze a requirement with pipenv?

11 Answers11

pip

pip3

pipenv run