# Concatenation string1 = "str" string2 = "ing" string3 = string1 + string2 # string3 is str + ing which is 'string' # OR print(string1 + string2) # prints 'string' # Format string3 = f"{string1}{string2}" # prints 'string'
var1 = "foo" var2 = "bar" var3 = var1 + var2
>>> s[:4] + '-' + s[4:] '3558-79ACB6'