[cosmetic] Fix licenses

.github/workflows/ci.yaml

@@ -5,7 +5,7 @@ on: [pull_request]
 jobs:
   lint:
     name: Lint check
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v1
       - uses: actions/setup-python@v1
@@ -19,7 +19,7 @@ jobs:
 
   format:
     name: Formatting check
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
 
     steps:
       - uses: actions/checkout@v1
@@ -34,7 +34,7 @@ jobs:
 
   wheel-build:
     name: Wheel test
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
 
     steps:
       - uses: actions/checkout@v1
@@ -53,7 +53,7 @@ jobs:
 
   bazel-tests:
     name: Library tests
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     needs: [lint, format]
 
     steps:
@@ -71,7 +71,7 @@ jobs:
 
   leak-tests:
     name: Memory Leak tests
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     needs: [lint, format]
 
     steps:
@@ -89,7 +89,7 @@ jobs:
 
   tutorials-test:
     name: Tutorial tests
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     needs: [lint, format, wheel-build]
 
     steps:

.github/workflows/cirq_compatibility.yaml

@@ -1,3 +1,4 @@
+
 name: Cirq Compatibility
 
 on:
@@ -7,7 +8,7 @@ on:
 jobs:
   consistency:
     name: Nightly Compatibility
-    runs-on: ubuntu-16.04
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v1
       - uses: actions/setup-python@v1

benchmarks/scripts/benchmark_clifford_circuit.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Benchmark simulators against classically simulatable circuits."""
 import os
 import time

benchmarks/scripts/benchmark_op_gradients.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Benchmark differentiator methods."""
 import os
 import time

benchmarks/scripts/benchmark_random_circuit.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Benchmark simulators against classically intractable 'supremacy' circuits."""
 import os
 import time

benchmarks/scripts/benchmark_util.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Utility functions for benchmark tools."""
 import tensorflow as tf
 import test_log_pb2

benchmarks/scripts/benchmark_util_test.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Tests for utilities related to reading/running benchmarks."""
 import os
 import tempfile

benchmarks/scripts/flags.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Command line flags shared between benchmarks."""
 from collections import namedtuple
 from absl import flags as absl_flags

benchmarks/scripts/flags_test.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Tests for benchmark command line flags."""
 
 import tensorflow as tf

benchmarks/scripts/models/__init__.py

@@ -11,4 +11,4 @@
 # 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.
-# ==============================================================================
+# =============================================================================

benchmarks/scripts/models/random_clifford_circuit.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 
 from typing import Iterable
 

benchmarks/scripts/models/random_clifford_circuit_test.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 
 from absl.testing import parameterized
 import cirq

configure.sh

@@ -12,7 +12,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 PLATFORM="$(uname -s | tr 'A-Z' 'a-z')"
 
 function write_to_bazelrc() {

docs/_book.yaml

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 upper_tabs:
 # Tabs left of dropdown menu
 - include: /_upper_tabs_left.yaml

docs/_index.yaml

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 book_path: /quantum/_book.yaml
 project_path: /quantum/_project.yaml
 description: >

release/build_pip_package.sh

@@ -12,7 +12,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 set -e
 set -x
 

release/setup.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """TensorFlow Quantum adds qauntum computing primitives to TensorFlow.
 
 TensorFlow Quantum is an open source library for high performance batch

scripts/benchmark_all.sh

@@ -12,7 +12,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 echo "Testing benchmarks.";
 test_outputs=$(bazel test -c opt --cxxopt="-D_GLIBCXX_USE_CXX11_ABI=1" --cxxopt="-msse2" --cxxopt="-msse3" --cxxopt="-msse4" --test_output=errors $(bazel query //benchmarks/...))
 exit_code=$?

scripts/build_docs.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Tool to generate external api_docs for tfq."""
 
 from __future__ import absolute_import

scripts/build_pip_package_test.sh

@@ -12,7 +12,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 
 pip install -r requirements.txt
 

scripts/ci_install.sh

@@ -12,7 +12,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 wget https://github.com/bazelbuild/bazel/releases/download/5.3.0/bazel_5.3.0-linux-x86_64.deb
 sudo dpkg -i bazel_5.3.0-linux-x86_64.deb
 pip install --upgrade pip setuptools wheel

scripts/ci_validate_tutorials.sh

@@ -12,7 +12,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 
 # Run the tutorials using the installed pip package
 pip install jupyter nbclient==0.6.5 jupyter-client==6.1.12 ipython==7.22.0

scripts/format_all.sh

@@ -12,13 +12,13 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 echo "Doing python language formatting..."
 python3 -m yapf --style=google --in-place --recursive ./benchmarks
 python3 -m yapf --style=google --in-place --recursive ./tensorflow_quantum
 echo -e "Done! \nDoing notebook formatting..."
 python3 ./scripts/format_ipynb.py
 echo -e "Done! \nDoing C++ formatting..."
-find tensorflow_quantum/ -iname *.h -o -iname *.cc | xargs clang-format -i -style=google
+find tensorflow_quantum/ -iname *.h -o -iname *.cc | xargs clang-format-6.0 -i -style=google
 echo "Done!"
 exit 0;

scripts/format_check.sh

@@ -12,7 +12,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 echo "Checking python formatting...";
 
 ################################################################################
@@ -92,7 +92,7 @@ else
 fi
 
 echo "Checking C++ formatting...";
-formatting_outputs=$(find tensorflow_quantum/ -iname *.h -o -iname *.cc | xargs clang-format -style=google -output-replacements-xml);
+formatting_outputs=$(find tensorflow_quantum/ -iname *.h -o -iname *.cc | xargs clang-format-6.0 -style=google -output-replacements-xml);
 CFORMATCHECK=0
 while read -r formatting_outputs; do
     if [ "$formatting_outputs" != "<?xml version='1.0'?>" ] && [ "$formatting_outputs" != "<replacements xml:space='preserve' incomplete_format='false'>" ] && [ "$formatting_outputs" != "</replacements>" ] && [ "$formatting_outputs" != "<replacement offset='4290' length='9'> </replacement>" ]; then

scripts/format_ipynb.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Format notebook code cells using yapf google style."""
 import glob
 import nbformat

scripts/import_test.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Tests to check if importing `tfq` APIs is successful or not."""
 import tensorflow_quantum as tfq
 

scripts/lint_all.sh

@@ -12,7 +12,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 echo "Checking for lint in python code...";
 linting_outputs=$(pylint --rcfile .pylintrc ./tensorflow_quantum ./examples);
 exit_code=$?

scripts/msan_test.sh

@@ -12,7 +12,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 echo "Testing All Bazel cc_tests with msan.";
 test_outputs=$(bazel test -c opt --cxxopt="-D_GLIBCXX_USE_CXX11_ABI=1" \
   --cxxopt="-msse2" --cxxopt="-msse3" --cxxopt="-msse4" \

scripts/run_example.sh

@@ -12,7 +12,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 cd ..
 cp quantum/scripts/import_test.py import_test.py
 python import_test.py

scripts/test_all.sh

@@ -12,7 +12,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 echo "Testing All Bazel py_test and cc_tests.";
 test_outputs=$(bazel test -c opt --experimental_repo_remote_exec --cxxopt="-D_GLIBCXX_USE_CXX11_ABI=1" --cxxopt="-std=c++17" --cxxopt="-msse2" --cxxopt="-msse3" --cxxopt="-msse4" --notest_keep_going --test_output=errors //tensorflow_quantum/...)
 exit_code=$?

scripts/test_benchmarks.sh

@@ -12,7 +12,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 echo "Testing all Benchmarks.";
 bazel test -c opt --cxxopt="-D_GLIBCXX_USE_CXX11_ABI=1" --cxxopt="-msse2" --cxxopt="-msse3" --cxxopt="-msse4" --test_output=errors $(bazel query //benchmarks/scripts:all)
 # test_outputs=$(bazel test -c opt --cxxopt="-D_GLIBCXX_USE_CXX11_ABI=1" --cxxopt="-msse2" --cxxopt="-msse3" --cxxopt="-msse4" --test_output=errors $(bazel query //benchmarks/scripts:all))

scripts/test_tutorials.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Module to ensure all notebooks execute without error by pytesting them."""
 import glob
 import re

tensorflow_quantum/__init__.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Module functions for tensorflow_quantum.*"""
 
 # Import basic ops and op getters.

tensorflow_quantum/core/__init__.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Imports to tensorflow_quantum.core.* level."""
 # Import getters for constructing ops.
 from tensorflow_quantum.core.ops import (get_expectation_op,

tensorflow_quantum/core/ops/__init__.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """Module for tfq.core.ops.*"""
 
 # Import getters for constructing ops.

tensorflow_quantum/core/ops/batch_util.py

@@ -11,7 +11,7 @@
 # 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.
-# ==============================================================================
+# =============================================================================
 """A module to for running Cirq objects."""
 import collections