MAINT: Switch to PyPI and bump min versions

Remove conda and use system python
Bump minimum supported versions

.travis.yml

@@ -1,94 +1,48 @@
-sudo: false
-
+dist: bionic
 language: python
 
 env:
   global:
     # Doctr deploy key for pydata/pandas-datareader
     - secure: "iGbOAbBSV5y0TKDh2CifRSk6OpLA9GbEEL/hscHFLSDDUCWcdfvYXda3SWJFWyoQ5QUxSigXWd+ukr4u92d7lmB7m3TWj6BAMNuRpatTgnejLNwLvNeYdvLAxPvx39Cq85frd1Rx1beBLn3h/4wm4Ah+dR5W9NH8+x3OuZMH3Eo="
 
-
 matrix:
   fast_finish: true
   include:
-  - dist: bionic
-    env:
-      - PYTHON=2.7 PANDAS=0.19.2
-  - dist: bionic
-    env:
-      - PYTHON=2.7 PANDAS=0.22
-  - dist: bionic
-    env:
-      - PYTHON=3.5 PANDAS=0.19.2
-  - dist: bionic
-    env:
-      - PYTHON=3.5 PANDAS=0.20.3
-  - dist: bionic
-    env:
-      - PYTHON=3.6 PANDAS=0.23.0
-  - dist: bionic
-    env:
-      - PYTHON=3.7 PANDAS=0.25 DOCBUILD=true
+  - python: 2.7
+    env: PANDAS=0.24 NUMPY=1.16
+  - python: 3.5
+    env: PANDAS=0.21 NUMPY=1.13
+  - python: 3.5
+    env: PANDAS=0.22 NUMPY=1.13
+  - python: 3.6
+    env: PANDAS=0.23 NUMPY=1.14
+  - python: 3.7
+    env: PANDAS=0.25 NUMPY=1.17 DOCBUILD=true
   # In allow failures
-  - dist: bionic
-    env:
-      - PYTHON=3.6 PANDAS="MASTER"
+  - env: PYTHON=3.7 PANDAS="MASTER"
   allow_failures:
-    - dist: bionic
-      env:
-        - PYTHON=3.6 PANDAS="MASTER"
+    - env: PYTHON=3.7 PANDAS="MASTER"
 
 install:
-  - pip install -qq flake8
-  # You may want to periodically update this, although the conda update
-  # conda line below will keep everything up-to-date.  We do this
-  # conditionally because it saves us some downloading if the version is
-  # the same.
-  - if [[ "$PYTHON" == "2.7" ]]; then
-      wget http://repo.continuum.io/miniconda/Miniconda-latest-Linux-x86_64.sh -O miniconda.sh;
-    else
-      wget http://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh;
-    fi
-  - bash miniconda.sh -b -p $HOME/miniconda
-  - export PATH="$HOME/miniconda/bin:$PATH"
-  - hash -r
-  - conda config --set always_yes yes --set changeps1 no
-  - conda config --add channels pandas
-  - conda update -q conda
-  # Useful for debugging any issues with conda
-  - conda info -a
-  - conda create -q -n test-environment python=$PYTHON coverage setuptools html5lib lxml pytest pytest-cov wrapt
-  - source activate test-environment
-  - if [[ "$PANDAS" == "MASTER" ]]; then
-      conda install numpy pytz python-dateutil;
-      PRE_WHEELS="https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a83.ssl.cf2.rackcdn.com";
-      pip install --pre --upgrade --timeout=60 -f $PRE_WHEELS pandas;
-    else
-      conda install pandas=$PANDAS;
-    fi
-  - if [[ $DOCBUILD ]]; then
-      conda install sphinx ipython matplotlib;
-      pip install sphinx_rtd_theme doctr;
-    fi
-  - pip install pip --upgrade
-  - pip install codecov coveralls beautifulsoup4
-  - conda list
+  - source ci/pypi-install.sh;
+  - pip install codecov coveralls beautifulsoup4 flake8
+  - pip list
   - python setup.py install
 
 script:
-    - export ENIGMA_API_KEY=$ENIGMA_API_KEY
     - pytest -s -r xX --cov-config .coveragerc --cov=pandas_datareader --cov-report xml:/tmp/cov-datareader.xml --junitxml=/tmp/datareader.xml
     - flake8 --version
     - flake8 pandas_datareader
 
 after_script:
   - |
-    if [[ ${DOCBUILD} ]]; then
+    if [[ "$DOCBUILD" ]]; then
       cd docs
       make html && make html
       cd ..
       doctr deploy devel --build-tags
-      if [[ -z ${TRAVIS_TAG} ]]; then
+      if [[ -z "$TRAVIS_TAG" ]]; then
         echo "Not a tagged build."
       else
         doctr deploy stable --build-tags

ci/pypi-install.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+set +x
+echo "PyPI install"
+
+pip install pip --upgrade
+pip install numpy=="$NUMPY" pytz python-dateutil coverage setuptools html5lib lxml pytest pytest-cov wrapt
+if [[ "$PANDAS" == "MASTER" ]]; then
+  PRE_WHEELS="https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a83.ssl.cf2.rackcdn.com"
+  pip install --pre --upgrade --timeout=60 -f "$PRE_WHEELS" pandas
+else
+  pip install pandas=="$PANDAS"
+fi
+if [[ "$DOCBUILD" ]]; then
+  pip install sphinx ipython matplotlib sphinx_rtd_theme doctr
+fi

pandas_datareader/econdb.py

@@ -1,6 +1,8 @@
+from pandas_datareader.compat import string_types
+
 import requests
 import pandas as pd
-import pandas.compat as compat
+
 
 from pandas_datareader.base import _BaseReader
 
@@ -15,7 +17,7 @@ class EcondbReader(_BaseReader):
     @property
     def url(self):
         """API URL"""
-        if not isinstance(self.symbols, compat.string_types):
+        if not isinstance(self.symbols, string_types):
             raise ValueError('data name must be string')
 
         return ('{0}?{1}&format=json&page_size=500&expand=meta'

requirements-dev.txt

@@ -2,3 +2,5 @@ ipython
 requests_cache
 sphinx
 sphinx_rtd_theme
+black
+isort

setup.cfg

@@ -7,3 +7,14 @@ style = pep440
 versionfile_source = pandas_datareader/_version.py
 versionfile_build = pandas_datareader/_version.py
 tag_prefix = v
+
+[isort]
+known_compat=pandas_datareader.compat.*
+sections=FUTURE,COMPAT,STDLIB,THIRDPARTY,PRE_CORE,FIRSTPARTY,LOCALFOLDER
+known_first_party=pandas_datareader
+known_third_party=numpy,pandas,pytest,requests
+multi_line_output=0
+force_grid_wrap=0
+combine_as_imports=True
+force_sort_within_sections=True
+line_width=99