example exercise https://www.codecademy.com/paths/computer-science/tracks/cspath-cs-101/modules/cspath-python-functions/projects/physics-class
I have been using commas to concatenate but the hint advises me to use str()
print("The GE train does", train_work, "Joules of work over", train_distance, "meters")
print("The GE train does " + str(train_work), "Joules of work over " + str(train_distance), "meters")
Both return the same output but I have to write a lot more in the 2nd option. Is using commas bad?
Hello @micro6373093900, welcome to the forums! When you use commas, you’re actually creating (and then printing) what’s effectively a tuple. Because of the way you’re printing it, it doesn’t appear any different, but if you wanted to use concatenation elsewhere (not inside a
print() function), you’d have to use
str() on any non-string values and
a = ("a", "b", "c")
#>>("a", "b", "c")
b = "a" + "b" + "c"
I hope that helps!