Answer 1

You need to have more than one value argument in the print statement before it works, like this......

print(var_1, var_2, sep="_")

Answer 2

Naina Kapoor That's because you haven't created a var_2 with a value, but you can also just write...

print(var_1, var_1, sep="_")

Answer 3

Naina Kapoor
you must have more than 1 item to print, otherwise there is nothing to separate.

print(1,2,3,4, sep='_')

in your example, you are only printing var1

Answer 4

Naina Kapoor
you can still use sep if you are just printing the result for a camel to snake conversion.

def c2s(s):
n=0
res=[]
for i,e in enumerate(s):
if e.isupper():
res.append(s[n:i].lower())
n = i
res.append(s[n:].lower())
print(*res, sep='_')

var = input().strip()
c2s(var)

s1 = 'weNeedToConvertToSnakeCase'
c2s(s1)

Answer 5

We cannot see others code coach solution using the links.

Answer 6

Naina Kapoor

sep will not work like that

You have to use formatter like this

f"_{var}"

But you have to iterate string and check if a character is in upper case then use formatter to replace that character with _

Answer 7

Look at the difference:
print("hello!, sep="_" ) #hello
print("hello", "world", sep="_") #hello_world

Answer 8

Fareedah Olusunmade
Tapha Sarr

Do not spam

Answer 9

Naina Kapoor
it's called slicing . it works for lists and strings to chop up parts you need.