TypeError: 'range' object does not support item assignment处理方法

vectorsum.py#!/usr/bin/env/pythonimport sysfrom datetime import datetimeimport numpy as np

# def numpysum(n):#     a = np.arange(n) ** 2#     b = np.arange(n) ** 3#     c = a + b#     return c

def pythonsum(n):    a = range(n)    b = range(n)    c = []    for i in range(len(a)):        a[i] = i ** 2        b[i] = i ** 3        c.append(a[i] + b[i])    return c

size = int(sys.argv[1])print (size)

start = datetime.now()c = pythonsum(size)delta = datetime.now() - startprint ("The last 2 elements of the sum", c[-2:])print ("PythonSum elapsed time in microseconds", delta.microseconds)# start = datetime.now()# c = numpysum(size)# delta = datetime.now() - start# print ("The last 2 elements of the sum", c[-2:])# print ("NumPySum elapsed time in microseconds", delta.microseconds)----------------------------------------------------------------------------运行结果：

D:\>python vectorsum.py 1000
1000
Traceback (most recent call last):
File "vectorsum.py", line 26, in <module>
c = pythonsum(size)
File "vectorsum.py", line 17, in pythonsum
a[i] = i ** 2
TypeError: ‘range‘ object does not support item assignment

----------------------------------------------------------------------------------------

将pythonsum函数修改如下： 

def pythonsum(n):    a = list(range(n))    b = list(range(n))    c = []    for i in range(len(a)):        a[i] = i ** 2        b[i] = i ** 3        c.append(a[i] + b[i])    return c

运行正常，通过-----------------------------------------------------------

TypeError: 'range' object does not support item assignment处理方法

原文地址：https://www.cnblogs.com/master-road/p/10646590.html