Warnings on CLI with Python 3.8.1

Description

When invoking the eb CLI for the first time after download (I installed using brew), a slew of Python warnings are printed to the console. However, after the first use these warnings do not show up again. Not a big problem, but just wanted to make this known.

Steps to reproduce

Invoke the eb CLI for the first time after installation: eb --version

Observed result

eb --version

/usr/local/Cellar/aws-elasticbeanstalk/3.17.0/libexec/lib/python3.8/site-packages/jmespath/visitor.py:32: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if x is 0 or x is 1:
/usr/local/Cellar/aws-elasticbeanstalk/3.17.0/libexec/lib/python3.8/site-packages/jmespath/visitor.py:32: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if x is 0 or x is 1:
/usr/local/Cellar/aws-elasticbeanstalk/3.17.0/libexec/lib/python3.8/site-packages/jmespath/visitor.py:34: SyntaxWarning: "is" with a literal. Did you mean "=="?
  elif y is 0 or y is 1:
/usr/local/Cellar/aws-elasticbeanstalk/3.17.0/libexec/lib/python3.8/site-packages/jmespath/visitor.py:34: SyntaxWarning: "is" with a literal. Did you mean "=="?
  elif y is 0 or y is 1:
/usr/local/Cellar/aws-elasticbeanstalk/3.17.0/libexec/lib/python3.8/site-packages/jmespath/visitor.py:260: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if original_result is 0:
/usr/local/Cellar/aws-elasticbeanstalk/3.17.0/libexec/lib/python3.8/site-packages/ebcli/display/screen.py:442: SyntaxWarning: assertion is always true, perhaps remove parentheses?
  assert(
/usr/local/Cellar/aws-elasticbeanstalk/3.17.0/libexec/lib/python3.8/site-packages/semantic_version/base.py:92: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if self.prerelease and self.minor is 0 and self.patch is 0:
/usr/local/Cellar/aws-elasticbeanstalk/3.17.0/libexec/lib/python3.8/site-packages/semantic_version/base.py:92: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if self.prerelease and self.minor is 0 and self.patch is 0:
/usr/local/Cellar/aws-elasticbeanstalk/3.17.0/libexec/lib/python3.8/site-packages/semantic_version/base.py:98: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if self.prerelease and self.patch is 0:
/usr/local/Cellar/aws-elasticbeanstalk/3.17.0/libexec/lib/python3.8/site-packages/ebcli/controllers/create.py:201: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if instance_types is "":

EB CLI 3.17.0 (Python 3.8.1)

Expected result

EB CLI 3.17.0 (Python 3.8.1)

Additional environment details (Ex: Windows, Mac, Amazon Linux etc)

1. OS: MacOS Mojave (Version 10.14.6)
2. Homebrew: 2.2.4

eb --version --debug

2020-02-01 19:53:35,999 (DEBUG) cement.core.foundation : laying cement for the 'eb' application
2020-02-01 19:53:35,999 (DEBUG) cement.core.hook : defining hook 'pre_setup'
2020-02-01 19:53:35,999 (DEBUG) cement.core.hook : defining hook 'post_setup'
2020-02-01 19:53:35,999 (DEBUG) cement.core.hook : defining hook 'pre_run'
2020-02-01 19:53:35,999 (DEBUG) cement.core.hook : defining hook 'post_run'
2020-02-01 19:53:35,999 (DEBUG) cement.core.hook : defining hook 'pre_argument_parsing'
2020-02-01 19:53:36,000 (DEBUG) cement.core.hook : defining hook 'post_argument_parsing'
2020-02-01 19:53:36,000 (DEBUG) cement.core.hook : defining hook 'pre_close'
2020-02-01 19:53:36,000 (DEBUG) cement.core.hook : defining hook 'post_close'
2020-02-01 19:53:36,000 (DEBUG) cement.core.hook : defining hook 'signal'
2020-02-01 19:53:36,000 (DEBUG) cement.core.hook : defining hook 'pre_render'
2020-02-01 19:53:36,000 (DEBUG) cement.core.hook : defining hook 'post_render'
2020-02-01 19:53:36,000 (DEBUG) cement.core.hook : registering hook 'add_handler_override_options' from cement.core.foundation into hooks['post_setup']
2020-02-01 19:53:36,000 (DEBUG) cement.core.hook : registering hook 'handler_override' from cement.core.foundation into hooks['post_argument_parsing']
2020-02-01 19:53:36,000 (DEBUG) cement.core.handler : defining handler type 'extension' (IExtension)
2020-02-01 19:53:36,000 (DEBUG) cement.core.handler : defining handler type 'log' (ILog)
2020-02-01 19:53:36,000 (DEBUG) cement.core.handler : defining handler type 'config' (IConfig)
2020-02-01 19:53:36,001 (DEBUG) cement.core.handler : defining handler type 'mail' (IMail)
2020-02-01 19:53:36,001 (DEBUG) cement.core.handler : defining handler type 'plugin' (IPlugin)
2020-02-01 19:53:36,001 (DEBUG) cement.core.handler : defining handler type 'output' (IOutput)
2020-02-01 19:53:36,001 (DEBUG) cement.core.handler : defining handler type 'argument' (IArgument)
2020-02-01 19:53:36,001 (DEBUG) cement.core.handler : defining handler type 'controller' (IController)
2020-02-01 19:53:36,001 (DEBUG) cement.core.handler : defining handler type 'cache' (ICache)
2020-02-01 19:53:36,001 (DEBUG) cement.core.handler : registering handler '<class 'cement.core.extension.CementExtensionHandler'>' into handlers['extension']['cement']
2020-02-01 19:53:36,019 (DEBUG) cement.ext.ext_plugin : plugin config dir /etc/eb/plugins.d does not exist.
2020-02-01 19:53:36,019 (DEBUG) cement.ext.ext_plugin : plugin config dir /Users/yanniskatsaros/.eb/plugins.d does not exist.
2020-02-01 19:53:36,025 (DEBUG) ebcli.core.hooks : -- EBCLI Version: 3.17.0
2020-02-01 19:53:36,025 (DEBUG) ebcli.core.hooks : -- Python Version: 3.8.1 (default, Dec 27 2019, 18:05:45)
[Clang 11.0.0 (clang-1100.0.33.16)]
2020-02-01 19:53:36,025 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /Users/yanniskatsaros  -Going up a level
2020-02-01 19:53:36,025 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /Users  -Going up a level
2020-02-01 19:53:36,026 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /  -Going up a level
2020-02-01 19:53:36,026 (DEBUG) ebcli.core.fileoperations : Still at the same directory /
2020-02-01 19:53:36,026 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /Users/yanniskatsaros  -Going up a level
2020-02-01 19:53:36,026 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /Users  -Going up a level
2020-02-01 19:53:36,026 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /  -Going up a level
2020-02-01 19:53:36,026 (DEBUG) ebcli.core.fileoperations : Still at the same directory /
2020-02-01 19:53:36,027 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /Users/yanniskatsaros  -Going up a level
2020-02-01 19:53:36,027 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /Users  -Going up a level
2020-02-01 19:53:36,027 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /  -Going up a level
2020-02-01 19:53:36,027 (DEBUG) ebcli.core.fileoperations : Still at the same directory /
2020-02-01 19:53:36,027 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /Users/yanniskatsaros  -Going up a level
2020-02-01 19:53:36,027 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /Users  -Going up a level
2020-02-01 19:53:36,028 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /  -Going up a level
2020-02-01 19:53:36,028 (DEBUG) ebcli.core.fileoperations : Still at the same directory /
2020-02-01 19:53:36,028 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /Users/yanniskatsaros  -Going up a level
2020-02-01 19:53:36,028 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /Users  -Going up a level
2020-02-01 19:53:36,028 (DEBUG) ebcli.core.fileoperations : beanstalk directory not found in /  -Going up a level
2020-02-01 19:53:36,028 (DEBUG) ebcli.core.fileoperations : Still at the same directory /

EB CLI 3.17.0 (Python 3.8.1)

[nguyenduyta]

same above, pip3 install jmespath fixed for me

[viniciosbarros]

I am also and still getting it. so annoying. but I was able to fix with: pip uninstall jmespath && pip3 install jmespath