标签：end cond sign pytho most package class rac pac
list=[] i =0 list[i] =1 Traceback (most recent call last): File "D:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 3267, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-4-28c9e44edb79>", line 1, in <module> list[i] =1 IndexError: list assignment index out of range list[0]=1 Traceback (most recent call last): File "D:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 3267, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-5-692d9d6c3702>", line 1, in <module> list[0]=1 IndexError: list assignment index out of range
list1=[]
print(list1)
[]
for i,x in enumerate(list1):
print(i,x)
list1.append(1)
print(list1)
[1]
即：空的list不能直接用角标赋值，会报错
要用append进行填充
或者下面这样：
list1=[] list2=[1,2,3] list1=list2 list1 Out[17]: [1, 2, 3]
标签：end cond sign pytho most package class rac pac
原文地址：https://www.cnblogs.com/qiu-1010/p/10678515.html
