PipRequirement.install_command() - Code Metrics - Inspection of "Requirements: Add installation methods" - coala-analyzer/coala - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#2408)

by Zatreanu

created 2016-06-29 21:29 UTC

PipRequirement.install_command() A

↳ Parent: PipRequirement

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	2
c	1
b	0
f	0
dl	0
loc	10
rs	9.4285

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))


1			from coalib.bears.requirements.PackageRequirement import PackageRequirement
2			from coalib.misc.Shell import call_without_output
3			import sys
4
5
6			class PipRequirement(PackageRequirement):
7			"""
8			This class is a subclass of ``PackageRequirement``, and helps specifying
9			requirements from ``pip``, without using the manager name.
10			"""
11
12			MANAGER = sys.executable + ' -m pip'
13
14			def __init__(self, package, version=""):
15			"""
16			Constructs a new ``PipRequirement``, using the ``PackageRequirement``
17			constructor.
18
19			>>> pr = PipRequirement('setuptools', '19.2')
20			>>> pr.manager
21			'pip'
22			>>> pr.package
23			'setuptools'
24			>>> pr.version
25			'19.2'
26
27			:param package: A string with the name of the package to be installed.
28			:param version: A version string. Leave empty to specify latest version.
29			"""
30			PackageRequirement.__init__(self, 'pip', package, version)
31
32			def install_command(self):
33			"""
34			Creates the installation command for the instance of the class.
35
36			:param return: A string with the installation command.
37			"""
38			result = "{} install {}".format(self.MANAGER, self.package)
39			if self.version:
40			result += "=={}".format(self.version)
41			return result
42
43			def is_installed(self):
44			"""
45			Checks if the dependency is installed.
46
47			:param return: True if dependency is installed, false otherwise.
48			"""
49			return not call_without_output(('pip', 'show', self.package))
50

coala-analyzer / coala

Pull Request — master (#2408)

PipRequirement.install_command() A

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