類型錯誤：當我使用WHILE

Question

Hello, I'm trying to make a simple iteration to get 1000 vectors to used them in another calculation, I >have tried many things but still I'm getting this error of "float" object is not iterable when I'm >using while. Here is my script:

import random 
count = 1000 
alfa_1 = [0, 1] 
alfa_2 = [0, 1] 
d = [0, 1] 
while count > 0: 
    print count 
    for i in range(count): 
     alfa_1 = random.random() * (max (alfa_1) - min(alfa_1)) + min (alfa_1) 
     alfa_2 = random.random() * (max(alfa_2) - min(alfa_2)) + min (alfa_2) 
     d = random.random() * (max(d) - min(d)) + min(d) 
     paramvect = [alfa_1, alfa_2, d] 
     print paramvect 
     count = count - 1 

Thanks for any help you can provide!

Answer 1

您最初分配alfa_1和alfa_2list值「浮動」對象不是可迭代的，但後來將它們分配給float值。

# As lists 
alfa_1 = [0, 1] 
alfa_2 = [0, 1] 
... 
# As floats 
alfa_1 = random.random() * (max (alfa_1) - min(alfa_1)) + min (alfa_1) 
alfa_2 = random.random() * (max(alfa_2) - min(alfa_2)) + min (alfa_2) 

因此，環路上的第二次迭代，你傳遞一個max時float預計可迭代的東西（如list）。 （目前尚不清楚目標是什麼，所以我不能提供更完整的解決方案。）