Hi all:
I want to check if an expression A is a complex number? I tried the
obvious
sage: if A in CC:
print "Yep."
but that doesn't work. For instance,
sage: sqrt(2) in CC:
False
One method that does work is
sage: try:
CC(A)
except:
print "Nope"
else:
print "Yep"
but is there a simpler way?
Alex
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