Instalando o Matplotlib com PIP - python, matplotlib, pip

Quando tento executar meu script python, recebo o seguinte erro

import matplotlib.pyplot as plt
ModuleNotFoundError: No module named "matplotlib"

Então eu tentei instalar o Matplotlib usando "pip instalar o matplotlib"

Então eu recebo o erro

Requirement already satisfied: matplotlib in
c:usersharlaanaconda2libsite-packages
Requirement already satisfied: numpy>=1.7.1 in
c:usersharlaanaconda2libsite-packages (from matplotlib)
Requirement already satisfied: six>=1.10 in
c:usersharlaanaconda2libsite-packages (from matplotlib)
Requirement already satisfied: python-dateutil in
c:usersharlaanaconda2libsite-packages (from matplotlib)
Requirement already satisfied: functools32 in
c:usersharlaanaconda2libsite-packages (from matplotlib)
Requirement already satisfied: pytz in c:usersharlaanaconda2libsite-
packages (from matplotlib)
Requirement already satisfied: cycler>=0.10 in
c:usersharlaanaconda2libsite-packages (from matplotlib)
Requirement already satisfied: pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=1.5.6 in
c:usersharlaanaconda2libsite-packages (from matplotlib)

Eu sei que eu instalei a anaconda. Eu não quero usar o Anaconda para isso. Como instalo a biblioteca matplotlib?

Respostas:

Eu resolvi isso removendo a variável de ambiente para C: UsersharlaAnaconda2Scripts_flag

Não tenho certeza se existe uma solução melhor.