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__init__.py
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__init__.py
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"""
SciPy: A scientific computing package for Python
================================================
Documentation is available in the docstrings and
online at https://docs.scipy.org.
Contents
--------
SciPy imports all the functions from the NumPy namespace, and in
addition provides:
Subpackages
-----------
Using any of these subpackages requires an explicit import. For example,
``import scipy.cluster``.
::
cluster --- Vector Quantization / Kmeans
constants --- Physical and mathematical constants and units
datasets --- Dataset methods
fft --- Discrete Fourier transforms
fftpack --- Legacy discrete Fourier transforms
integrate --- Integration routines
interpolate --- Interpolation Tools
io --- Data input and output
linalg --- Linear algebra routines
misc --- Utilities that don't have another home.
ndimage --- N-D image package
odr --- Orthogonal Distance Regression
optimize --- Optimization Tools
signal --- Signal Processing Tools
sparse --- Sparse Matrices
spatial --- Spatial data structures and algorithms
special --- Special functions
stats --- Statistical Functions
Public API in the main SciPy namespace
--------------------------------------
::
__version__ --- SciPy version string
LowLevelCallable --- Low-level callback function
show_config --- Show scipy build configuration
test --- Run scipy unittests
"""
from numpy import show_config as show_numpy_config
if show_numpy_config is None:
raise ImportError(
"Cannot import SciPy when running from NumPy source directory.")
from numpy import __version__ as __numpy_version__
# Import numpy symbols to scipy name space (DEPRECATED)
from ._lib.deprecation import _deprecated
import numpy as np
_msg = ('scipy.{0} is deprecated and will be removed in SciPy 2.0.0, '
'use numpy.{0} instead')
# deprecate callable objects from numpy, skipping classes and modules
import types as _types # noqa: E402
for _key in np.__all__:
if _key.startswith('_'):
continue
_fun = getattr(np, _key)
if isinstance(_fun, _types.ModuleType):
continue
if callable(_fun) and not isinstance(_fun, type):
_fun = _deprecated(_msg.format(_key))(_fun)
globals()[_key] = _fun
del np, _types
from numpy.random import rand, randn
_msg = ('scipy.{0} is deprecated and will be removed in SciPy 2.0.0, '
'use numpy.random.{0} instead')
rand = _deprecated(_msg.format('rand'))(rand)
randn = _deprecated(_msg.format('randn'))(randn)
# fft is especially problematic, so was removed in SciPy 1.6.0
from numpy.fft import ifft
ifft = _deprecated('scipy.ifft is deprecated and will be removed in SciPy '
'2.0.0, use scipy.fft.ifft instead')(ifft)
from numpy.lib import scimath # noqa: E402
_msg = ('scipy.{0} is deprecated and will be removed in SciPy 2.0.0, '
'use numpy.lib.scimath.{0} instead')
for _key in scimath.__all__:
_fun = getattr(scimath, _key)
if callable(_fun):
_fun = _deprecated(_msg.format(_key))(_fun)
globals()[_key] = _fun
del scimath
del _msg, _fun, _key, _deprecated
# We first need to detect if we're being called as part of the SciPy
# setup procedure itself in a reliable manner.
try:
__SCIPY_SETUP__
except NameError:
__SCIPY_SETUP__ = False
if __SCIPY_SETUP__:
import sys
sys.stderr.write('Running from SciPy source directory.\n')
del sys
else:
try:
from scipy.__config__ import show as show_config
except ImportError as e:
msg = """Error importing SciPy: you cannot import SciPy while
being in scipy source directory; please exit the SciPy source
tree first and relaunch your Python interpreter."""
raise ImportError(msg) from e
from scipy.version import version as __version__
# Allow distributors to run custom init code
from . import _distributor_init
del _distributor_init
from scipy._lib import _pep440
# In maintenance branch, change to np_maxversion N+3 if numpy is at N
# See setup.py for more details
np_minversion = '1.21.6'
np_maxversion = '1.28.0'
if (_pep440.parse(__numpy_version__) < _pep440.Version(np_minversion) or
_pep440.parse(__numpy_version__) >= _pep440.Version(np_maxversion)):
import warnings
warnings.warn(f"A NumPy version >={np_minversion} and <{np_maxversion}"
f" is required for this version of SciPy (detected "
f"version {__numpy_version__})",
UserWarning)
del _pep440
# This is the first import of an extension module within SciPy. If there's
# a general issue with the install, such that extension modules are missing
# or cannot be imported, this is where we'll get a failure - so give an
# informative error message.
try:
from scipy._lib._ccallback import LowLevelCallable
except ImportError as e:
msg = "The `scipy` install you are using seems to be broken, " + \
"(extension modules cannot be imported), " + \
"please try reinstalling."
raise ImportError(msg) from e
from scipy._lib._testutils import PytestTester
test = PytestTester(__name__)
del PytestTester
submodules = [
'cluster',
'constants',
'datasets',
'fft',
'fftpack',
'integrate',
'interpolate',
'io',
'linalg',
'misc',
'ndimage',
'odr',
'optimize',
'signal',
'sparse',
'spatial',
'special',
'stats'
]
__all__ = submodules + [
'LowLevelCallable',
'test',
'show_config',
'__version__',
]
def __dir__():
return __all__
import importlib as _importlib
def __getattr__(name):
if name in submodules:
return _importlib.import_module(f'scipy.{name}')
else:
try:
return globals()[name]
except KeyError:
raise AttributeError(
f"Module 'scipy' has no attribute '{name}'"
)