一.pytest运行方式介绍

pytest有两种种方式运行，命令行，以及pytest.main()方法。推荐使用命令行。

pytest.main([“参数，用逗号隔开”])

二.命令行方式

pytest常见参数，详细 pytest --help

  -k EXPRESSION         only run tests which match the given substring
                        expression. An expression is a python evaluatable
                        expression where all names are substring-matched
                        against test names and their parent classes. Example:
                        -k 'test_method or test_other' matches all test
                        functions and classes whose name contains
                        'test_method' or 'test_other'. Additionally keywords
                        are matched to classes and functions containing extra
                        names in their 'extra_keyword_matches' set, as well as
                        functions which have names assigned directly to them.
  -m MARKEXPR           only run tests matching given mark expression.
                        example: -m 'mark1 and not mark2'.
  --markers             show markers (builtin, plugin and per-project ones).
  -x, --exitfirst       exit instantly on first error or failed test.
  --maxfail=num         exit after first num failures or errors.
  --strict              marks not registered in configuration file raise
                        errors.
  -c file               load configuration from `file` instead of trying to
                        locate one of the implicit configuration files.
  -s                    shortcut for --capture=no.
  --lf, --last-failed   rerun only the tests that failed at the last run (or
                        all if none failed)
  --ff, --failed-first  run all tests but run the last failures first. This
                        may re-order tests and thus lead to repeated fixture
                        setup/teardown
  -v, --verbose         increase verbosity.
  -q, --quiet           decrease verbosity.
  -r chars              show extra test summary info as specified by chars
                        (f)ailed, (E)error, (s)skipped, (x)failed, (X)passed,
                        (p)passed, (P)passed with output, (a)all except pP.
                        Warnings are displayed at all times except when
                        --disable-warnings is set
  --disable-warnings, --disable-pytest-warnings
                        disable warnings summary

pytest -vv -s  "目录或者文件"