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Anthony Burt
Python Development Techdegree Student 644 PointsLess than or equal
Hello, Why in the following code would you right -= rather than >= I am trying to understand the difference. If I put >- then the remaining tickets counter does not lower.
#If they want to proceed
if should_proceed.lower() =="y":
#Print out to the screen "SOLD!" to confirm purchase
print("SOLD!")
#and then reduce the tickets remaining by the number of tickets purchased.
tickets_remaining -= num_tickets
[MOD: added ```python formatting -cf]
1 Answer
Chris Freeman
Treehouse Moderator 68,441 PointsHey Anthony Burt, there certainly are a lot of operators in python! The += is an in place operator where:
a += b
# same as
a = a + b
that is, add b to a and put the result back in a. So in the code above, num_tickets is subtracted from tickets_remaining and the result is placed back into tickets_remaining.
The >= is a value comparison operator where the expression:
a >= b
returns a True value if a is greater or equal to b.
There is no >- operator. (perhaps a typo?)
Anthony Burt
Python Development Techdegree Student 644 PointsAnthony Burt
Python Development Techdegree Student 644 PointsHello Chris. Thank you so much for the detailed answer! That makes a lot more sense. Yes, this >- was a typo. I meant type >= I see now why that was not working.