packages_upgrader.py 文件源码

def _maybe_update_line_package(self, line, package):
        original_line = line
        pattern = r'\b{package}(?:\[\w*\])?=={old_version}\b'.format(
            package=re.escape(package['name']),
            old_version=re.escape(str(package['current_version'])))

        if re.search(pattern, line, flags=re.IGNORECASE):
            line = line.replace(
                '=={}'.format(package['current_version']),
                '=={}'.format(package['latest_version'])
            )

        if line != original_line:
            self.upgraded_packages.append(package)

            if self.dry_run:  # pragma: nocover
                print('[Dry Run]: skipping requirements replacement:',
                      original_line.replace('\n', ''), ' / ',
                      line.replace('\n', ''))
                return original_line
        return line