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python 報錯TypeError: 'range' object does not support item assignment,解決方法

1. 例子如下:

from math import sqrt
if __name__ == '__main__':
    N = 100
    a = range(0,N)
    for i in range(2,int(sqrt(N))):
        for j in range(i + 1,N):
            if (a[i] != 0) and (a[j] != 0):
                if a[j] % a[i] == 0:
                        a[j]= 0

    for i in range(2,N):
        if
a[i] != 0: print ("%5d" % a[i]) if (i - 2) % 10 == 0: print

執行後報錯:TypeError: ‘range’ object does not support item assignment

2 .報錯原因如下:

嘗試使用range()
建立整數列表(導致“TypeError: ‘range’ object does not support item assignment”)有時你想要得到一個有序的整數列表,所以range() 看上去是生成此列表的不錯方式。然而,你需要記住range() 返回的是“range object”,而不是實際的list 值。

3. 解決方法:

將上面例子的程式碼: a = range(0,N)改為a = list(range(0,N)) 就好啦!