#!/usr/bin/env python3

# Copyright 2014 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.

from pprint import pprint

def load_cities_list(path):
    result = []
    with open(path) as handle:
        for line in handle:
            city, count = line.split('\t')
            result.append((city, int(count)))
    return result


result = load_cities_list('population.tsv')
pprint(result)

#

def load_cities_generator(path):
    with open(path) as handle:
        for line in handle:
            city, count = line.split('\t')
            yield city, int(count)


result = load_cities_generator('population.tsv')
print(next(result))
print(next(result))
print(next(result))
