Source code for flamingpy

# Copyright 2022 Xanadu Quantum Technologies Inc.

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#     http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Threshold estimations for measurement-based implementation of quantum error
correcting codes using GKP qubits."""

import sys
import platform
import os
import warnings

import numpy
import scipy
import networkx
import rustworkx
import matplotlib

try:
    import flamingpy.cpp.lemonpy as lp

    cpp_libraries_available = True
except ImportError:  # pragma: no cover
    cpp_libraries_available = False
    warnings.warn("Failed to import flamingpy.cpp libraries.", ImportWarning)

from ._version import __version__


__all__ = ["version", "about"]


def version():
    r"""Version number of FlamingPy.

    Returns:
      str: package version number
    """
    return __version__


def about():
    """Prints the installed version numbers for FlamingPy and its dependencies,
    and some system info.

    Please include this information in bug reports.
    """

    # a QuTiP-style infobox
    print(
        "\nFlamingPy is a cross-platform Python library with a variety of backends",
        "for efficient simulations of error correction in fault-tolerant quantum computers.",
    )
    print("\nCopyright 2022 Xanadu Quantum Technologies Inc.\n")

    print("Platform info:               {}".format(platform.platform()))
    print("Installation path:           {}".format(os.path.dirname(__file__)))
    print("Python version:              {}.{}.{}".format(*sys.version_info[0:3]))
    print("FlamingPy version:           {}".format(__version__))
    print("Numpy version:               {}".format(numpy.__version__))
    print("Scipy version:               {}".format(scipy.__version__))
    print("NetworkX version:            {}".format(networkx.__version__))
    print("rustworkx version:           {}".format(rustworkx.__version__))
    print("Matplotlib version:          {}".format(matplotlib.__version__))
    print(
        "lemonpy shared object:       {}".format(
            "Not installed" if not cpp_libraries_available else lp
        )
    )

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