always_breakpoint.py

#!/usr/bin/env PYTHONHASHSEED=1234 python3

# Copyright 2014-2019 Brett Slatkin, Pearson Education 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.

import math

def compute_rmse(observed, ideal):
    total_err_2 = 0
    count = 0
    for got, wanted in zip(observed, ideal):
        err_2 = (got - wanted) ** 2
        breakpoint()  # Start the debugger here
        total_err_2 += err_2
        count += 1

    mean_err = total_err_2 / count
    rmse = math.sqrt(mean_err)
    return rmse

result = compute_rmse(
    [1.8, 1.7, 3.2, 6],
    [2, 1.5, 3, 5])
print(result)