Python 2.x gotchas and landmines

Question

The purpose of my question is to strengthen my knowledge base with Python and get a better picture of it, which includes knowing its faults and surprises. To keep things sp

Answer 1

Floats are not printed at full precision by default (without repr):

x = 1.0 / 3
y = 0.333333333333
print x  #: 0.333333333333
print y  #: 0.333333333333
print x == y  #: False

repr prints too many digits:

print repr(x)  #: 0.33333333333333331
print repr(y)  #: 0.33333333333300003
print x == 0.3333333333333333  #: True