Python how to remove last comma from print(string, end=“, ”)

Question

my output from a forloop is

string = \"\"
for x in something:
   #some operation
   string =  x += string 

print(string)

5
66
777

I use

Answer 1

In case your for loop is doing also something else than printing, then you can maintain your current structure with this approach.

 strings = ['5', '66', '777']

 for i in range(len(strings)-1):
      # some operation

      print(strings[i], end=', ')

 # some operation (last time)
 print(strings[-1])

5, 66, 777