craftbeerpi4-pione/venv3/lib/python3.7/site-packages/pandas/compat/__init__.py

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2021-03-03 23:49:41 +01:00
"""
compat
======
Cross-compatible functions for different versions of Python.
Other items:
* platform checker
"""
import platform
import struct
import sys
import warnings
from pandas._typing import F
PY37 = sys.version_info >= (3, 7)
PY38 = sys.version_info >= (3, 8)
PY39 = sys.version_info >= (3, 9)
PYPY = platform.python_implementation() == "PyPy"
IS64 = sys.maxsize > 2 ** 32
# ----------------------------------------------------------------------------
# functions largely based / taken from the six module
# Much of the code in this module comes from Benjamin Peterson's six library.
# The license for this library can be found in LICENSES/SIX and the code can be
# found at https://bitbucket.org/gutworth/six
def set_function_name(f: F, name: str, cls) -> F:
"""
Bind the name/qualname attributes of the function.
"""
f.__name__ = name
f.__qualname__ = f"{cls.__name__}.{name}"
f.__module__ = cls.__module__
return f
# https://github.com/pandas-dev/pandas/pull/9123
def is_platform_little_endian() -> bool:
"""
Checking if the running platform is little endian.
Returns
-------
bool
True if the running platform is little endian.
"""
return sys.byteorder == "little"
def is_platform_windows() -> bool:
"""
Checking if the running platform is windows.
Returns
-------
bool
True if the running platform is windows.
"""
return sys.platform == "win32" or sys.platform == "cygwin"
def is_platform_linux() -> bool:
"""
Checking if the running platform is linux.
Returns
-------
bool
True if the running platform is linux.
"""
return sys.platform == "linux2"
def is_platform_mac() -> bool:
"""
Checking if the running platform is mac.
Returns
-------
bool
True if the running platform is mac.
"""
return sys.platform == "darwin"
def is_platform_32bit() -> bool:
"""
Checking if the running platform is 32-bit.
Returns
-------
bool
True if the running platform is 32-bit.
"""
return struct.calcsize("P") * 8 < 64
def _import_lzma():
"""
Importing the `lzma` module.
Warns
-----
When the `lzma` module is not available.
"""
try:
import lzma
return lzma
except ImportError:
msg = (
"Could not import the lzma module. Your installed Python is incomplete. "
"Attempting to use lzma compression will result in a RuntimeError."
)
warnings.warn(msg)
def _get_lzma_file(lzma):
"""
Importing the `LZMAFile` class from the `lzma` module.
Returns
-------
class
The `LZMAFile` class from the `lzma` module.
Raises
------
RuntimeError
If the `lzma` module was not imported correctly, or didn't exist.
"""
if lzma is None:
raise RuntimeError(
"lzma module not available. "
"A Python re-install with the proper dependencies, "
"might be required to solve this issue."
)
return lzma.LZMAFile