bump min required Python version to 3.8

.travis.yml

@@ -5,7 +5,6 @@ before_install:
   - sudo apt-get -qq update
   - sudo apt-get install -yq libsnappy-dev zlib1g-dev libbz2-dev libgflags-dev liblz4-dev librocksdb-dev libleveldb-dev libboost-all-dev libsodium-dev
 python:
-  - "3.7"
   - "3.8"
   - "3.9-dev"
 # command to install dependencies
@@ -44,7 +43,7 @@ script:
   - sh -c "cd docs && make html"
 # Dont report coverage from nightly
 after_success:
-  - if [[ $(python3 -V 2>&1) == *"Python 3.7"* ]]; then
+  - if [[ $(python3 -V 2>&1) == *"Python 3.8"* ]]; then
       pip install coveralls;
       coveralls;
     fi

README.rst

@@ -8,7 +8,7 @@ ElectrumX - Reimplementation of electrum-server
 ===============================================
 
   :Licence: MIT
-  :Language: Python (>= 3.7)
+  :Language: Python (>= 3.8)
   :Original Author: Neil Booth
 
 This project is a fork of `kyuupichan/electrumx <https://github.com/kyuupichan/electrumx>`_.

docs/HOWTO.rst

@@ -15,7 +15,7 @@ small - pull requests are welcome.
 ================ ========================
 Package          Notes
 ================ ========================
-Python3          ElectrumX uses asyncio.  Python version >= 3.7 is
+Python3          ElectrumX uses asyncio.  Python version >= 3.8 is
                  **required**.
 `aiohttp`_       Python library for asynchronous HTTP.  Version >=
                  2.0 required.

docs/index.rst

@@ -34,7 +34,7 @@ Authors and License
 ===================
 
 Neil Booth wrote the vast majority of the code; see :ref:`Authors`.
-Python version at least 3.7 is required.
+Python version at least 3.8 is required.
 
 The code is released under the `MIT Licence
 <https://github.com/spesmilo/electrumx/LICENCE>`_.

electrumx_compact_history

@@ -42,8 +42,8 @@ from electrumx.server.db import DB
 
 
 async def compact_history():
-    if sys.version_info < (3, 7):
-        raise RuntimeError('Python >= 3.7 is required to run ElectrumX')
+    if sys.version_info < (3, 8):
+        raise RuntimeError('Python >= 3.8 is required to run ElectrumX')
 
     environ['DAEMON_URL'] = ''   # Avoid Env erroring out
     env = Env()

electrumx_server

@@ -26,8 +26,8 @@ def main():
 
     logger.info('ElectrumX server starting')
     try:
-        if sys.version_info < (3, 7):
-            raise RuntimeError('ElectrumX requires Python 3.7 or greater')
+        if sys.version_info < (3, 8):
+            raise RuntimeError('ElectrumX requires Python 3.8 or greater')
         env = Env()
         logger.info(f'logging level: {env.log_level}')
         logger.setLevel(env.log_level)

setup.py

@@ -5,7 +5,7 @@
     name='e-x',
     version=version,
     scripts=['electrumx_server', 'electrumx_rpc', 'electrumx_compact_history'],
-    python_requires='>=3.7',
+    python_requires='>=3.8',
     install_requires=['aiorpcX[ws]>=0.18.5,<0.19', 'attrs',
                       'plyvel', 'pylru', 'aiohttp>=3.3,<4'],
     extras_require={
@@ -38,7 +38,7 @@
         'Framework :: AsyncIO',
         'License :: OSI Approved :: MIT License',
         'Operating System :: Unix',
-        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
         "Topic :: Database",
         'Topic :: Internet',
     ],