Pythonメモ

困ったことまとめ

selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {“method”:”css selector”,”selector”:”span.grade_icon.lg img”}

TypeError: ‘list’ object is not callable

minを変数として使用してた

https://qiita.com/cm3/items/6a856c44dd92632aa54f

入力値が数字であるかどうかの判定には.isdecimal

https://pg-chain.com/python-isdecimal

while文を用いて正しい値が入力されるまでループ

https://qiita.com/u1and0/items/66a72fef8bc0a7ce5eda

and、or複数のときは()使う

https://www.sejuku.net/blog/20674#i

リストに、一発でリストの中の値を追加する.extend()

https://note.nkmk.me/python-list-append-extend-insert/

オリジナル関数を定義def

https://note.nkmk.me/python-function-def-return/

https://qiita.com/motoki1990/items/64e0ecf4ab188a07688d

プログラムの実行経過時間確認.time.time()

https://www.sejuku.net/blog/23955#time-2

try、exceptの使い方

https://www.sejuku.net/blog/23044

seleniumで要素チェック（エラーを回避）

from selenium.common.exceptions import NoSuchElementException

https://narito.ninja/detail/69/#_8

最大・最小

https://www.python-izm.com/advanced/min_max/

Pythonの基本文法

http://www.tohoho-web.com/python/index.html

for文などでリストなどとカウントを同時に扱う　enumerate

https://note.nkmk.me/python-for-usage/

Pythonで対数logなどの計算

https://note.nkmk.me/python-math-exp-log/

returnのあとは処理されない

https://techacademy.jp/magazine/18886

組み込み型（%dとか%sとか）の対応表

https://docs.python.jp/3/library/stdtypes.html#printf-style-string-formatting

複数リストをfor文でループするにはzip()

https://note.nkmk.me/python-for-usage/

リストの要素の出現数を数える

https://note.nkmk.me/python-collections-counter/