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item_018.py
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#!/usr/bin/env PYTHONHASHSEED=1234 python3
# Copyright 2014-2024 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.
### 책 예제에 맞는 환경 설정을 시작함
import random
random.seed(1234)
import logging
from pprint import pprint
from sys import stdout as STDOUT
# 모든 출력을 임시 디렉터리로 보냄
import atexit
import gc
import io
import os
import tempfile
TEST_DIR = tempfile.TemporaryDirectory()
atexit.register(TEST_DIR.cleanup)
# 윈도우에서 프로세스가 제대로 종료되도록 함
OLD_CWD = os.getcwd()
atexit.register(lambda: os.chdir(OLD_CWD))
os.chdir(TEST_DIR.name)
def close_open_files():
everything = gc.get_objects()
for obj in everything:
if isinstance(obj, io.IOBase):
obj.close()
atexit.register(close_open_files)
### 책 예제에 맞는 환경설정 끝
print("아이템 18")
print("Example 1")
names = ["Cecilia", "남궁민수", "毛泽东"]
counts = [len(n) for n in names]
print(counts)
print("Example 2")
longest_name = None
max_count = 0
for i in range(len(names)):
count = counts[i]
if count > max_count:
longest_name = names[i]
max_count = count
print(longest_name)
print("Example 3")
longest_name = None
max_count = 0
for i, name in enumerate(names): # 변경함
count = counts[i]
if count > max_count:
longest_name = name # 변경함
max_count = count
assert longest_name == "Cecilia"
print("Example 4")
longest_name = None
max_count = 0
for name, count in zip(names, counts): # 변경함
if count > max_count:
longest_name = name
max_count = count
assert longest_name == "Cecilia"
print("Example 5")
names.append("Rosalind")
for name, count in zip(names, counts):
print(name)
print("Example 6")
try:
for name, count in zip(names, counts, strict=True): # Changed
print(name)
except:
logging.exception('이 예외가 발생해야 함')
else:
assert False