Python用list作變量名,則用type判斷某列表是否是列表會失效
list = [1, 2, 3, 4, 5] lis=[] print(type(lis)==list) 輸出: False當用list作為變量名時,用type
Python列表排序sort()方法只能用於同一類型
a=[5,2,[1,3]] print(a.sort()) 輸出:TypeError: < not supported between instances
Python刪除字符串頭部的指定字符串
target_str=abc str1=abcadodksiabckdfiabc new_str=str1 if str1.index(target_str)!
Python字符串的rindex()方法
str1 = abacad print(str1.rindex(a)) 輸出: 4str1.rindex(‘a’)返回str1裡從後往前找到的第一個‘a’的下標
Python實現列表的rindex的方法
我們知道rindex只有字符串有,返回從後往前找到的第一個匹配項的下標。列表沒有rindex,如果需要的話需要自己實現。下面是一種實現方法:def list_r
[Python automated excel] pandas handles the opening and closing of Excel
Words Excel Data sheet , Long period of division 、 A long time must be divided.
Python advanced (25) coroutine
The definition of process coroutines (Coroutine), Also called tasklet , fibers
使用Python time標准庫的一個易錯點(gmtime)
今天在寫圖形學項目時,導入Python標准庫中的time庫,想要使用其中的gmtime()獲取系統時間,但是調試時總是出錯。 於是本人在多次徒勞嘗試之後,一怒之
[Python] advanced variable customs clearance Tutorial Part I (list, tuple, dictionary)
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[Python] function topic (knowledge summary, exercise refinement and programming practice)
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Python exercises tuition calculation
This is wrong , Does anyone know this , Ive changed it myself for a long time, b
Fundamentals of Python Programming
Python Programming based One 、 brief introduction 1.Python Interpreter 2. chara
Python implementation of rindex for lists
We know rindex Only strings have , Returns the subscript of the first match foun
Rindex() method of Python string
str1 = abacad print(str1.rindex(a)) Output : 4str1.rindex(‘a’) return str1 The