Question

我努力让我的功能得以发挥作用。以下是它的基础：

#for example:
data=[(b),(c),(d),(e)]

results=[]
for x in data: #this goes through each row of the data
    # body_code executes. This part is mostly just changing types, etc
    a=final_body_code
    results.append(a)
print results

#output should be: results=[(b),(c),(d),(e)] #After changing types of b,c,d,e etc.

#The body of the code does not matter at this point, it's just the appending which i'm
#struggling with.

然而，当我这样做时，它似乎没有附加到结果列表。我是python的新手，所以请帮忙！

Answer 1

您应该添加示例。

也许您在a=final_body_code中遇到了一些问题，结果是None

然而，使用list comprehension

对@Mrinal Wahal的回答略有改善

results = [final_body_code(i) for i in data]

Answer 2

我认为这就是你愿意做的事。

data=[(b),(c),(d),(e)]

results=[]

for x in data:
    results.append(x)

print results

Answer 3

data = [b, c, d, e]

results = []

results.extend(final_body_code(i) for i in data)

return results

如何从For循环中追加所有结果的列表？

3 个答案: