CODEWITHSUNDEEP
pythonif-statementconditional-statements
TsvGis
TsvGis

Reputation: 632

Python conditional one or the other but not both

I am trying to compile an if statement in python where it checks two variables to see if they are <= .05. Now if both variables are True, I just want the code to pass/continue, but if only one of the variables are True, then I want the code to do something. eg:

ht1 = 0.04
ht2 = 0.03

if (ht1 <= 0.05) or (ht2 <= 0.05):
    # do something
else:
    pass

I don't think this example will work the way I would want it as my understanding of OR is 1 condition returns True or both conditions return True. If someone could assit in pointing me in the right direction, it would greatly be apprecaited.

Upvotes: 12

Views: 25953

Answers (4)

NightShadeQueen
NightShadeQueen

Reputation: 3334

This method is technically slower because it has to calculate the comparisons twice, but I find it slightly more readable. Your mileage may vary.

ht1 = 0.04
ht2 = 0.03

if (ht1 <= 0.05) and (ht2 <= 0.05):
   pass
elif (ht1 <= 0.05) or (ht2 <= 0.05):
    # do something.

Upvotes: 3

luoluo
luoluo

Reputation: 5533

Just another way of doing so:

if  max(ht1, ht2) > 0.05 and min(ht1, ht2) <= 0.05:

Upvotes: 0

tzaman
tzaman

Reputation: 47770

What you want is called an "exclusive-OR", which in this case can be expressed as a 'not-equal' or 'is not' relation:

if (ht <= 0.05) is not (ht2 <= 0.05):

The way this works is that the if will only succeed if one of them is True and the other one is False. If they're both True or both False then it'll go to the else block.

Upvotes: 18

Ignacio Vazquez-Abrams
Ignacio Vazquez-Abrams

Reputation: 798536

Since relational operators always result in a bool, just check to see if they are different values.

if (ht1 <= 0.05) != (ht2 <= 0.05): # Check if only one is true
   ...

Upvotes: 9

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