Merge branch 'main' into patch-1

Author: bashtage

.travis.yml

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+# pandas-datareader
+
+Up to date remote data access for pandas, works for multiple versions of
+pandas.
+
+[![image](https://img.shields.io/pypi/v/pandas-datareader.svg)](https://pypi.python.org/pypi/pandas-datareader/)
+[![image](https://codecov.io/gh/pydata/pandas-datareader/branch/master/graph/badge.svg)](https://codecov.io/gh/pydata/pandas-datareader)
+[![image](https://readthedocs.org/projects/pandas-datareader/badge/?version=latest)](https://pandas-datareader.readthedocs.io/en/latest/)
+[![image](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+[![License](https://img.shields.io/pypi/l/pandas-datareader)](https://pypi.org/project/pandas-datareader/)
+
+## Installation
+
+Install using `pip`
+
+``` shell
+pip install pandas-datareader
+```
+
+## Usage
+
+``` python
+import pandas_datareader as pdr
+pdr.get_data_fred('GS10')
+```
+
+## Documentation
+
+[Stable documentation](https://pydata.github.io/pandas-datareader/) is available on
+[github.io](https://pydata.github.io/pandas-datareader/). A second copy of the stable
+documentation is hosted on [read the docs](https://pandas-datareader.readthedocs.io/)
+for more details.
+
+[Development documentation](https://pydata.github.io/pandas-datareader/devel/) is available
+for the latest changes in master.
+
+### Requirements
+
+Using pandas datareader requires the following packages:
+
+-   pandas>=1.0
+-   lxml
+-   requests>=2.19.0
+
+Building the documentation additionally requires:
+
+-   matplotlib
+-   ipython
+-   requests_cache
+-   sphinx
+-   pydata_sphinx_theme
+
+Development and testing additionally requires:
+
+-   black
+-   coverage
+-   codecov
+-   coveralls
+-   flake8
+-   pytest
+-   pytest-cov
+-   wrapt
+
+### Install latest development version
+
+``` shell
+python -m pip install git+https://github.com/pydata/pandas-datareader.git
+```
+
+or
+
+``` shell
+git clone https://github.com/pydata/pandas-datareader.git
+cd pandas-datareader
+python setup.py install
+```

README.md

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+# https://docs.microsoft.com/en-us/azure/devops/pipelines/process/templates?view=azure-devops#passing-parameters
+schedules:
+- cron: "27 3 * * 0"
+  # 3:27am UTC every Sunday
+  displayName: Weekly build
+  branches:
+    include:
+    - main
+  always: true
+
+trigger:
+- main
+
+variables:
+  PYTHONHASHSEED: 12345678
+  SETUPTOOLS_USE_DISTUTILS: "stdlib"
+  coverage: true
+  RANDOMGEN_CYTHON_COVERAGE: true
+
+jobs:
+    
+- template: ci/azure/azure_template_posix.yml
+  parameters:
+    name: Linux
+    vmImage: ubuntu-20.04
+
+- template: ci/azure/azure_template_windows.yml
+  parameters:
+    name: Windows
+    vmImage: windows-2019

README.rst

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+# Python package
+# Create and test a Python package on multiple Python versions.
+# Add steps that analyze code, save the dist with the build record, publish to a PyPI-compatible index, and more:
+# https://docs.microsoft.com/azure/devops/pipelines/languages/python
+
+parameters:
+  # defaults for any parameters that are not specified
+  name: ''
+  vmImage: ''
+  coverage: true
+
+jobs:
+
+- job: ${{ parameters.name }}Test
+  pool:
+    vmImage: ${{ parameters.vmImage }}
+  strategy:
+    matrix:
+      ${{ if eq(parameters.name, 'Linux') }}:
+        python36_legacy:
+          python.version: '3.6'
+          PANDAS: 1.0.5
+        python37_legacy:
+          python.version: '3.7'
+          PANDAS: 1.1.5
+        python38_recent:
+          python.version: '3.8'
+          PANDAS: 1.2.5
+        python39_latest:
+          python.version: '3.9'
+
+    # maxParallel: 10
+
+  steps:
+  - task: UsePythonVersion@0
+    inputs:
+      versionSpec: '$(python.version)'
+    displayName: 'Use Python $(python.version)'
+
+  - script: |
+      python -m pip install pip setuptools -U      
+      python -m pip install -r requirements.txt
+      python -m pip install -r requirements-dev.txt
+
+      if [[ -n ${PANDAS} ]]; then 
+        python -m pip install pandas==${PANDAS}
+      fi;
+    displayName: 'Install dependencies'
+
+  - script: |
+      python -m pip install -e . -v --no-build-isolation
+    displayName: 'Install'
+
+  - script: python -m pip list
+    displayName: 'List Configuration (PyPI)'
+
+  - script: |
+     black --check pandas_datareader
+     isort --check pandas_datareader
+     flake8 pandas_datareader
+    displayName: 'Check style and formatting'
+
+  - script: |
+      echo "Testing editable install"
+      if [[ ${COVERAGE} == "true" ]]; then
+        export COVERAGE_OPTS="--cov-config .coveragerc --cov=pandas_datareader --cov-report xml:coverage.xml --cov-report term"
+      fi
+      echo pytest -m "${PYTEST_PATTERN}" --junitxml=junit/test-results.xml -n 2 --durations=25 ${COVERAGE_OPTS} pandas_datareader/tests
+      pytest -m "${PYTEST_PATTERN}" --junitxml=junit/test-results.xml -n 2 --durations=25 ${COVERAGE_OPTS} pandas_datareader/tests
+    displayName: 'Run tests'
+
+  - task: PublishTestResults@2
+    inputs:
+      testResultsFiles: '**/test-results.xml'
+      testRunTitle: 'Python $(python.version)'
+    condition: succeededOrFailed()
+
+  - task: PublishCodeCoverageResults@1
+    inputs:
+      codeCoverageTool: Cobertura
+      summaryFileLocation: '$(System.DefaultWorkingDirectory)/**/coverage.xml'
+    condition: eq(variables['coverage'], 'true')
+
+  - bash: bash <(curl -s https://codecov.io/bash)
+    displayName: 'CodeCov upload'
+    condition: eq(variables['coverage'], 'true')