File size: 2,028 Bytes
09a3fa9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | # Copyright (c) OpenMMLab. All rights reserved.
import importlib
import os.path as osp
import subprocess
import pkg_resources
from pkg_resources import get_distribution
def is_installed(package: str) -> bool:
"""Check package whether installed.
Args:
package (str): Name of package to be checked.
"""
# refresh the pkg_resources
# more datails at https://github.com/pypa/setuptools/issues/373
importlib.reload(pkg_resources)
try:
get_distribution(package)
return True
except pkg_resources.DistributionNotFound:
return False
def get_installed_path(package: str) -> str:
"""Get installed path of package.
Args:
package (str): Name of package.
Example:
>>> get_installed_path('mmcls')
>>> '.../lib/python3.7/site-packages/mmcls'
"""
# if the package name is not the same as module name, module name should be
# inferred. For example, mmcv-full is the package name, but mmcv is module
# name. If we want to get the installed path of mmcv-full, we should concat
# the pkg.location and module name
pkg = get_distribution(package)
possible_path = osp.join(pkg.location, package)
if osp.exists(possible_path):
return possible_path
else:
return osp.join(pkg.location, package2module(package))
def package2module(package: str):
"""Infer module name from package.
Args:
package (str): Package to infer module name.
"""
pkg = get_distribution(package)
if pkg.has_metadata('top_level.txt'):
module_name = pkg.get_metadata('top_level.txt').split('\n')[0]
return module_name
else:
raise ValueError(f'can not infer the module name of {package}')
def call_command(cmd: list) -> None:
try:
subprocess.check_call(cmd)
except Exception as e:
raise e # type: ignore
def install_package(package: str):
if not is_installed(package):
call_command(['python', '-m', 'pip', 'install', package])
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