remove(value):将value从SortedList中移除.如果SortedList中没有该值,则会引发ValueError错误.复杂度为O(log(n)) >>> sl = SortedList([1, 2, 3, 4, 5]) >>> sl.remove(5) >>> sl == [1, 2, 3, 4] True >>> sl.remove(0) Traceback (most re
如果重复需要用比如pandas,后面再import,之前的话都是灰色了fromdatetimeimportdatetimeimportmatplotlib.pyplotaspltimportosfromcollectionsimportOrderedDict# python 3.7 needfrommultiprocessingimportPool,cpu_countfromtypingimportList,Union,Dict,Tupleimportrandom
# Remove the element with the value 5 from the listmy_list.remove(5) We can also use thepop()function. # Removes the last element from the listlast_element=my_list.pop() We can also use thedelkeyword. In each of the above cases, the new list will be[1, 2, 3, 4]after the ...
last_student = students[-1] # "Charlie"2.1.1.2 列表的增删改操作 列表提供了丰富的内置方法来改变其内容: •增:append()、extend()、insert() •删:remove()、pop()、del关键字、clear() •改:直接赋值或使用list[index] = new_value 实例演示: # 增加元素 students.append("David") # ["Alice...
String form:[1,2,3]Length:3Docstring:Built-inmutable sequence.If no argument is given,the constructor creates anewemptylist.The argument must be an iterableifspecified.In[3]:print?Docstring:print(value,...,sep=' ',end='\n',file=sys.stdout,flush=False)Prints the values to a stream,or ...
个值得第一个匹配项6Raises ValueErrorifthe valueisnotpresent.78>>> a =["test","test","demo"]9>>> a.remove("test")10>>>a11['test','demo']12>>> a.remove("aa")13Traceback (most recent call last):14File"<stdin>", line 1,in<module>15ValueError: list.remove(x): xnotinlist16...
One last thing to note: if you just need to loop over the unique items right away there's no need to convert back to a list. This works fine:>>> for color in dict.fromkeys(all_colors): ... print(color) ... blue purple green red pink ...
Last update on April 19 2025 13:02:48 (UTC/GMT +8 hours) Remove Duplicates from List Write a Python program to remove duplicates from a list. Visual Presentation: Sample Solution: Python Code: # Define a list 'a' with some duplicate and unique elementsa=[10,20,30,20,10,50,60,40,...
list.remove(x) Remove the first item from the list whose value isx. It is an error if there is no such item. list.pop([i]) Remove the item at the given position in the list, and return it. If no index is specified,a.pop()removes and returns the last item in the list. (The...
Remove all items from the list. Equivalent to del a[:].移除列表中所有的对象。等效于del a[:]。list.index(x[, start[, end]])Return zero-based index in the list of the first item whose value is equal to x. Raises a ValueError if there is no such item.在等于 x 的第一个项中返回...