pythonstringprintingformattingcustom-formatting

Print all items in a list with a delimiter

Given a Python list, what is the preferred way to print it with comma delimiter/separator, and no intervening spaces, and no trailing comma at the end, after the last element:

I tried:

a = [1, 2, 3]
for element in a:
  print str(element) + ",", # old Python 2 syntax

output
1,2,3,
desired
1,2,3
Solution 
  • >>> ','.join(map(str,a))
'1,2,3'