complex if statement in python

Question

I need to realize a complex if-elif-else statement in Python but I don't get it working.

The elif line I need has to check a variable for this conditions:

80, 443 or 1024-65535 inclusive

I tried

if   ...   # several checks   ... elif (var1 > 65535) or ((var1 < 1024) and (var1 != 80) and (var1 != 443)):   # fail else   ... 

Answer 1

This should do it:

elif var == 80 or var == 443 or 1024 <= var <= 65535: 

Answer 2

It's often easier to think in the positive sense, and wrap it in a not:

elif not (var1 == 80 or var1 == 443 or (1024 <= var1 <= 65535)):   # fail 

You could of course also go all out and be a bit more object-oriented:

class PortValidator(object):   @staticmethod   def port_allowed(p):     if p == 80: return True     if p == 443: return True     if 1024 <= p <= 65535: return True     return False   # ... elif not PortValidator.port_allowed(var1):   # fail