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Anaconda is a like broader version of PIP for package management for python development and related
it package more than python related stuffs, and other extended language and tools as well;
Anaconda managed environment for each task, like virtualenv python module to isolation development and configure for each task, and not limited to isolation of python but others as well
anaconda is mainly for Python and R, and for data science and machine learning,
docker also can isolate, but is for wide range of use case