# Path: dev_tools/env_tools.py
# def get_unhidden_ungenerated_python_files(directory: str) -> Iterable[str]:
# def create_virtual_env(venv_path: str,
#                        requirements_paths: Iterable[str],
#                        python_path: str,
#                        verbose: bool) -> None:
# def prepare_temporary_test_environment(
#         destination_directory: str,
#         repository: GithubRepository,
#         pull_request_number: Optional[int],
#         verbose: bool,
#         env_name: str = '.test_virtualenv',
#         python_path: str = '/usr/bin/python3.5',
#         commit_ids_known_callback: Callable[[PreparedEnv], None] = None
# ) -> PreparedEnv:
# 
# Path: dev_tools/all_checks.py
# ALL_CHECKS = [
#     pylint,
#     typecheck,
#     pytest,
#     incremental_coverage,
# ]
# 
# Path: dev_tools/check.py
# class CheckResult:
# class Check(metaclass=abc.ABCMeta):
#     def __init__(self,
#                  check: 'Check',
#                  success: bool,
#                  message: str,
#                  unexpected_error: Optional[Exception]) -> None:
#     def __str__(self):
#     def __init__(self, *dependencies):
#     def command_line_switch(self) -> str:
#     def context(self) -> str:
#     def perform_check(self,
#                       env: env_tools.PreparedEnv,
#                       verbose: bool) -> Tuple[bool, str]:
#     def run(self,
#             env: env_tools.PreparedEnv,
#             verbose: bool,
#             previous_failures: Set['Check']) -> CheckResult:
#     def pick_env_and_run_and_report(self,
#                                     env: env_tools.PreparedEnv,
#                                     verbose: bool,
#                                     previous_failures: Set['Check']
#                                     ) -> CheckResult:


from typing import Set, List, Iterable
from dev_tools import env_tools, all_checks, check
import os
import shutil
import sys
import tempfile
    seen = set()  # type: Set[check.Check]

    def handle(item: check.Check):
        if item in seen:
            return
        seen.add(item)

        # Dependencies first.
        for dep in item.dependencies:
            handle(dep)

        result.append(item)

    for e in checks:
        handle(e)

    return result


def parse_args():
    args = sys.argv
    verbose = '--verbose' in args
    only = [e.split('--only=')[1]
            for e in args
            if e.startswith('--only=')]
    checks = all_checks.ALL_CHECKS
    if only:
        checks = [e for e in checks if e.command_line_switch() in only]
        if len(checks) != len(only):
            print('Bad --only argument. Allowed values {!r}.'.format(

# Path: dev_tools/env_tools.py
# def get_unhidden_ungenerated_python_files(directory: str) -> Iterable[str]:
# def create_virtual_env(venv_path: str,
#                        requirements_paths: Iterable[str],
#                        python_path: str,
#                        verbose: bool) -> None:
# def prepare_temporary_test_environment(
#         destination_directory: str,
#         repository: GithubRepository,
#         pull_request_number: Optional[int],
#         verbose: bool,
#         env_name: str = '.test_virtualenv',
#         python_path: str = '/usr/bin/python3.5',
#         commit_ids_known_callback: Callable[[PreparedEnv], None] = None
# ) -> PreparedEnv:
# 
# Path: dev_tools/all_checks.py
# ALL_CHECKS = [
#     pylint,
#     typecheck,
#     pytest,
#     incremental_coverage,
# ]
# 
# Path: dev_tools/check.py
# class CheckResult:
# class Check(metaclass=abc.ABCMeta):
#     def __init__(self,
#                  check: 'Check',
#                  success: bool,
#                  message: str,
#                  unexpected_error: Optional[Exception]) -> None:
#     def __str__(self):
#     def __init__(self, *dependencies):
#     def command_line_switch(self) -> str:
#     def context(self) -> str:
#     def perform_check(self,
#                       env: env_tools.PreparedEnv,
#                       verbose: bool) -> Tuple[bool, str]:
#     def run(self,
#             env: env_tools.PreparedEnv,
#             verbose: bool,
#             previous_failures: Set['Check']) -> CheckResult:
#     def pick_env_and_run_and_report(self,
#                                     env: env_tools.PreparedEnv,
#                                     verbose: bool,
#                                     previous_failures: Set['Check']
#                                     ) -> CheckResult:


# Path: dev_tools/run_checks.py
from typing import Set, List, Iterable
from dev_tools import env_tools, all_checks, check
import os
import shutil
import sys
import tempfile

    seen = set()  # type: Set[check.Check]

    def handle(item: check.Check):
        if item in seen:
            return
        seen.add(item)

        # Dependencies first.
        for dep in item.dependencies:
            handle(dep)

        result.append(item)

    for e in checks:
        handle(e)

    return result


def parse_args():
    args = sys.argv
    verbose = '--verbose' in args
    only = [e.split('--only=')[1]
            for e in args
            if e.startswith('--only=')]
    checks = all_checks.ALL_CHECKS
    if only:
        checks = [e for e in checks if e.command_line_switch() in only]
        if len(checks) != len(only):
            print('Bad --only argument. Allowed values {!r}.'.format(

                      [e.command_line_switch() for e in all_checks.ALL_CHECKS]),