looping over python list and string formating

Question

loop a list in string formatted list

I have the following variables

BUILDING = "123"
SIDE = "ProductionA"
TODO = "traveling without moving"

I have the following list

OS = ["Linux", "Unix", "Windows"]

I create a formatted string list

FLIST = [
"I am installing in {}, side {} using the {} cd".format (BUILDING,SIDE,o),
"Other random stuff",
"Even more random stuff: ".format(TODO)]

I want to loop the loop the list:

for o in OS:
    print(o)
    for f in FLIST:
        print(f)

I am hoping to get:

"I am installing in 123, side ProductionA using the Linux cd"
"Other random stuff",
"Even more random stuff: traveling without moving"

"I am installing in 123, side ProductionA using the Unix cd"
"Other random stuff",
"Even more random stuff: traveling without moving"

"I am installing in 123, side ProductionA using the Windows cd"
"Other random stuff",
"Even more random stuff: traveling without moving"

The print(o) works, i am getting the values(Linux,Unix,Window) if i omit the OS in the format string.

I am installing in {}, side {} using the {} cd".format (BUILDING,SIDE)

But the o variable is not accepted by the formatted list, the error i am getting is:

NameError: name 'o' is not defined.

Help is appreciated.

Answer 1

I have placed the FLIST inside the loop. Try,

BUILDING = "123"
SIDE = "ProductionA"
TODO = "traveling without moving"

OS = ["Linux", "Unix", "Windows"]

for o in OS:
    print(o)
    FLIST = ["I am installing in {}, side {} using the {} cd".format (BUILDING,SIDE,o),"Other random stuff","Even more random stuff: {}".format(TODO)]
    for f in FLIST:
        print(f)

Output:

Linux
I am installing in 123, side ProductionA using the Linux cd
Other random stuff
Even more random stuff: traveling without moving
Unix
I am installing in 123, side ProductionA using the Unix cd
Other random stuff
Even more random stuff: traveling without moving
Windows
I am installing in 123, side ProductionA using the Windows cd
Other random stuff
Even more random stuff: traveling without moving

See it in action here

Answer 2

FLIST should rather be function taking o as an input:

BUILDING = "123"
SIDE = "ProductionA"
TODO = "traveling without moving"

# Note f-strings only work in python 3.6+, revert to .format() if you need to use an older version
def make_flist(operating_system):
    return [
        f"I am installing in {BUILDING}, side {SIDE} using the {operating_system} cd",
        "Other random stuff",
        f"Even more random stuff: {TODO}"
    ]

operating_systems = ["Linux", "Unix", "Windows"]

for operating_system in operating_systems:
    print(operating_system)
    for statement in make_flist(operating_system):
        print(statement)