When initiating a new virtual environment in an existing python application, I am able to successfully generate a Pipfile from the requirements.txt. All of the explicit Pipfile package version numbers match the explicit package version numbers listed in my initial requirements.txt. But when I generate a new requirements.txt from the Pipfile, the requirements.txt's packages do not match before and after being imported/exported from pipenv. Any idea why that is the case? Why would the Pipfile match the imported requirements, but the exported requirements don't match either one. I would expect that explicit package version numbers would be consistent between all three files. The --keep-outdated flag did not appear to make much of a difference when generating the final requirements.txt.

I need the generated/exported requirements.txt to match precisely the explicit pipfile package numbers.