Python の基本構文

参考

• Python Playground

配列

list = ['A', 'B', 'C']
print(list[0]) # 'A'

dict

d = {'k1': 1, 'k2': 2, 'k3': 3}
print(d) # {'k1': 1, 'k2': 2, 'k3': 3}
print(d['k1']) # 1

型出力

docs = websites_ref.stream()
print(type(docs)) # <class 'generator'>

NOTE: イテレータとジェネレータが存在する。

条件式 or

og_description = "A"
description = "B"
answer = og_description or description or ""
print(answer) # "A"

og_description = ""
description = "B"
answer = og_description or description
print(answer) # "B"

og_description = None
description = "B"
answer = og_description or description
print(answer) # "B"

og_description = None
description = None
answer = og_description or description
print(answer) # None

og_description = None
description = None
answer = og_description or description or ""
print(answer) # ""

条件式 not

if not is_existed:

三項演算子

a = {True時の処理} if {条件式} else {False時の処理}

URL取得

from urllib.parse import urlparse
parsed_url = urlparse("https://nishimura.club/")
article_id = hash_text(parsed_url.geturl()) 

import

from urllib.request import urlopen
from urllib.parse import urlparse