2. Remove Multiple Items From a List Using If Statement You can remove multiple items from a list using the if control statement. To iterate the list using Pythonfor loopat a specific condition. For every iteration use aifstatement to check the condition, if the condition is true, then remo...
startswith('__')]) # 输出:['append', 'clear', 'copy', 'count', 'extend', 'index', 'insert', 'pop', 'remove', 'reverse', 'sort'] # 查看自定义类的属性和方法 class Person: def __init__(self, name, age): self.name = name self.age = age def greet(self): return f"...
To remove an item from a list, we have two options. One is using del mylist[i] where i is the index. Other is call mylist.remove(i) method where i is item in the list.
Raises IndexError if list is empty or index is out of range. """ pass def clear(self): # real signature unknown; restored from __doc__ """ L.clear() -> None -- remove all items from L """ pass 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. ...
例如,以下list子类有三种用于统计计算的方法: from collections import defaultdict class StatsList(list): def mean(self): return sum(self) / len(self) def median(self): if len(self) % 2: return self[int(len(self) / 2)] else: idx = int(len(self) / 2) return (self[idx] + self[...
【一】列表(LIST): 下面是从help中摘录的一部分常用的方法: #创建列表list() ->new empty list#追加列表|append(...)| L.append(object) -> None --append object to end#清除列表|clear(...)| L.clear() -> None -- remove all itemsfromL#复制...|copy(...)| L.copy() -> list --a ...
从列表中移除重复元素，但仅限于奇数个重复的元素>>> from scipy.stats import itemfreq >>> xs = ...
print(List) 输出 [1, 2, 3, 4, 5, 6] [1, 2, 10, 4, 5, 6] [1, 89, 78, 4, 5, 6] 还可以使用del关键字删除列表元素。如果我们不知道要从列表中删除哪个元素, Python还将为我们提供remove()方法。 请考虑以下示例, 以删除列表元素。
ws.append(list):表格末尾追加数据 ws.merge_cells(‘A2:D2’):合并单元格 ws.unmerge_cells(‘A2:D2’):解除合并单元格。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 # coding=utf-8from openpyxlimportload_workbook wb=load_workbook(r'测试1.xlsx')# 获取已存在的工作簿 ...
1. What method is used to remove an item from a list by value? A. remove() B. delete() C. discard() D. pop() Show Answer 2. How can you remove an item from a list using its index? A. remove(index) B. pop(index) C. delete(index) D. discard(index) Show ...