[python] How do I revert to a previous package in Anaconda?

If I do

conda info pandas

I can see all of the packages available.

I updated my pandas to the latest this morning, but I need to revert to a prior version now. I tried

conda update pandas 0.13.1

but that didn't work. How do I specify which version to use?

This question is related to python anaconda conda

The answer is

For the case that you wish to revert a recently installed package that made several changes to dependencies (such as tensorflow), you can "roll back" to an earlier installation state via the following method:

conda list --revisions
conda install --revision [revision number]

The first command shows previous installation revisions (with dependencies) and the second reverts to whichever revision number you specify.

Note that if you wish to (re)install a later revision, you may have to sequentially reinstall all intermediate versions. If you had been at revision 23, reinstalled revision 20 and wish to return, you may have to run each:

conda install --revision 21
conda install --revision 22
conda install --revision 23

I know it was not available at the time, but now you could also use Anaconda navigator to install a specific version of packages in the environments tab.

Examples related to python

programming a servo thru a barometer Is there a way to view two blocks of code from the same file simultaneously in Sublime Text? python variable NameError Why my regexp for hyphenated words doesn't work? Comparing a variable with a string python not working when redirecting from bash script is it possible to add colors to python output? Get Public URL for File - Google Cloud Storage - App Engine (Python) Real time face detection OpenCV, Python xlrd.biffh.XLRDError: Excel xlsx file; not supported Could not load dynamic library 'cudart64_101.dll' on tensorflow CPU-only installation

Examples related to anaconda

Upgrade to python 3.8 using conda Updating Anaconda fails: Environment Not Writable Error Jupyter Notebook not saving: '_xsrf' argument missing from post Conda version pip install -r requirements.txt --target ./lib How to check python anaconda version installed on Windows 10 PC? Anaconda / Python: Change Anaconda Prompt User Path How to access Anaconda command prompt in Windows 10 (64-bit) Conda activate not working? update to python 3.7 using anaconda Tensorflow import error: No module named 'tensorflow'

Examples related to conda

Upgrade to python 3.8 using conda How do I prevent Conda from activating the base environment by default? Conda version pip install -r requirements.txt --target ./lib Removing Conda environment PackagesNotFoundError: The following packages are not available from current channels: Conda activate not working? ModuleNotFoundError: No module named 'sklearn' How do I update Anaconda? Conda command is not recognized on Windows 10 'Conda' is not recognized as internal or external command