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
|
"""
Stand-alone module to provide information about whether optional deps exist.
"""
from importlib import import_module
import logging
import sys
logger = logging.getLogger(__name__)
_not_importable = set()
def get_module(name, should_load=True):
"""
Return module or None. Absolute import is required.
:param (str) name: Dot-separated module path. E.g., 'scipy.stats'.
:raise: (ImportError) Only when exc_msg is defined.
:return: (module|None) If import succeeds, the module will be returned.
"""
if name in sys.modules:
return sys.modules[name]
if not should_load:
return None
if name not in _not_importable:
try:
return import_module(name)
except ImportError:
_not_importable.add(name)
except Exception:
_not_importable.add(name)
msg = f"Error importing optional module {name}"
logger.exception(msg)
|
