What is Anaconda

What is the difference between pyenv, virtualenv, anaconda?
Conda: Myths and Misconceptions
Why do people hesitate to use Python 3?
Should I use Python 2 or Python 3 for my development activity?

Miniconda

Preparing transaction: done
Executing transaction: done
installation finished.
Do you wish the installer to initialize Miniconda3
by running conda init? [yes|no]
[no] >>> no

You have chosen to not have conda modify your shell scripts at all.
To activate conda's base environment in your current shell session:

eval "$(/home/bacr/miniconda3/bin/conda shell.YOUR_SHELL_NAME hook)" 

To install conda's shell functions for easier access, first activate, then:

conda init

If you'd prefer that conda's base environment not be activated on startup, 
   set the auto_activate_base parameter to false: 

conda config --set auto_activate_base false

Thank you for installing Miniconda3!

Installing bigfloat

python bigfloat installation issues
Installing Bigfloat for Python

C:\Program Files\Anaconda3>conda install bigfloat
Fetching package metadata .........
Solving package specifications: .
PackageNotFoundError: Package not found: '' Package missing in current win-64 channels:
  - bigfloat
You can search for packages on anaconda.org with
    anaconda search -t conda bigfloat

C:\Program Files\Anaconda3>anaconda search -t conda bigfloat
Using Anaconda API: https://api.anaconda.org
Run 'anaconda show <USER/PACKAGE>' to get more details:
Packages:
     Name                      |  Version | Package Types   | Platforms
     ------------------------- |   ------ | --------------- | ---------------
     auto/bigfloat             |  0.3.0a2 | conda           | linux-32
                                          : Arbitrary precision correctly-rounded floating point arithmetic, via MPFR.
     bokonon/bigfloat          |  0.3.0a2 | conda           | win-32, win-64
                                          : Arbitrary precision correctly-rounded floating point arithmetic, via MPFR.
     clinicalgraphics/bigfloat |  0.3.0a2 | conda           | win-32, win-64
                                          : Arbitrary precision correctly-rounded floating point arithmetic, via MPFR.
     prkrekel/bigfloat         |  0.3.0a2 | conda           | win-32, win-64
                                          : Arbitrary precision correctly-rounded floating point arithmetic, via MPFR.
Found 4 packages

C:\Program Files\Anaconda3> conda install -c prkrekel bigfloat
Fetching package metadata ...........
Solving package specifications: ....
UnsatisfiableError: The following specifications were found to be in conflict:
  - bigfloat
  - python 3.5*
Use "conda info <package>" to see the dependencies for each package.

(C:\Program Files\Anaconda3) C:\WINDOWS\system32>conda install -c conda-forge gmpy2
Fetching package metadata ...........
Solving package specifications: ..........

Package plan for installation in environment C:\Program Files\Anaconda3:

The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    conda-env-2.6.0            |                0           1 KB  conda-forge
    mpir-2.7.2                 |           vc14_3         2.9 MB  conda-forge
    vc-14                      |                0          985 B  conda-forge
    mpfr-3.1.4                 |           vc14_3         1.7 MB  conda-forge
    conda-4.2.13               |           py35_0         436 KB  conda-forge
    mpc-1.0.3                  |           vc14_3         263 KB  conda-forge
    gmpy2-2.0.7                |      py35_vc14_1         445 KB  conda-forge
    ------------------------------------------------------------
                                           Total:         5.7 MB

The following NEW packages will be INSTALLED:

    conda-env: 2.6.0-0           conda-forge
    gmpy2:     2.0.7-py35_vc14_1 conda-forge [vc14]
    mpc:       1.0.3-vc14_3      conda-forge [vc14]
    mpfr:      3.1.4-vc14_3      conda-forge [vc14]
    mpir:      2.7.2-vc14_3      conda-forge [vc14]
    vc:        14-0              conda-forge

The following packages will be UPDATED:

    conda:     4.2.9-py35_0                  --> 4.2.13-py35_0 conda-forge

Proceed ([y]/n)? y

Update Conda

==> WARNING: A newer version of conda exists. <==
  current version: 4.11.0
  latest version: 4.12.0

Please update conda by running

    $ conda update -n base -c defaults conda