Building List from Variables in Python

Question

Suppose I have these variables:

a = ['a','b','c']
b = 'yay'
c = 'cool'

I want to build a list d which contains:

['yay', 'a', 'b', 'c', 'cool']

I'd tried d = [b, a, c] but the result isn't what I wanted, it became:

['yay', ['a', 'b', 'c'], 'cool']

please if someone could help me.

Answer 1

You could do:

d = [b, *a, c]

To unpack the values of the list into the new list

Answer 2

They way you are trying to add elements is adding a separate list try to use extend method of list which extends the previous list from the provided one

myList = []
myList.append(b)
myList.extend(a) #this is what you are looking for . 
myList.append(c)
print(myList) # ['yay', 'a', 'b', 'c', 'cool']

Answer 3

Just make the lists out of them and use addition operator + among the lists.

[b] + a + [c]

OUTPUT:

['yay', 'a', 'b', 'c', 'cool']

Answer 4

The .extend method will extend the list.

a = ['a','b','c']
b = 'yay'
c = 'cool'
d=[]
d.extend(a)
d.append(b)
d.append(c)

You can also do

a+[b]+[c]