You can run any Flake8 command you need.

Example workflow (Put the following text into the file .github/main.workflow in your repo):

workflow "New workflow" {
  on = "push"
  resolves = ["Flake8 command"]
}

action "Flake8 command" {
  uses = "cclauss/GitHub-Action-for-Flake8@master"
  args = "flake8 ."
}

Or to use Flake8 to find Python 3 syntax errors and undefined names, try:

$ flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics

E901,E999,F821,F822,F823 are the "showstopper" flake8 issues that can halt the runtime with a SyntaxError, NameError, etc. These 5 are different from most other flake8 issues which are merely "style violations" -- useful for readability but they do not effect runtime safety.

• F821: undefined name name
• F822: undefined name name in __all__
• F823: local variable name referenced before assignment
• E901: SyntaxError or IndentationError
• E999: SyntaxError -- failed to compile a file into an Abstract Syntax Tree