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for finding and fixing issues
for empowering human code reviews
from coalib.bears.requirements.PackageRequirement import PackageRequirement
from coalib.misc.Shell import call_without_output
import sys
class PipRequirement(PackageRequirement):
"""
This class is a subclass of ``PackageRequirement``, and helps specifying
requirements from ``pip``, without using the manager name.
MANAGER = sys.executable + ' -m pip'
def __init__(self, package, version=""):
Constructs a new ``PipRequirement``, using the ``PackageRequirement``
constructor.
>>> pr = PipRequirement('setuptools', '19.2')
>>> pr.manager
'pip'
>>> pr.package
'setuptools'
>>> pr.version
'19.2'
:param package: A string with the name of the package to be installed.
:param version: A version string. Leave empty to specify latest version.
PackageRequirement.__init__(self, 'pip', package, version)
def install_command(self):
Creates the installation command for the instance of the class.
:param return: A string with the installation command.
result = "{} install {}".format(self.MANAGER, self.package)
if self.version:
result += "=={}".format(self.version)
return result
def is_installed(self):
Checks if the dependency is installed.
:param return: True if dependency is installed, false otherwise.
return not call_without_output(('pip', 'show', self.package))
coala-analyzer /
coala
