How to code a series of alternatives

[Scott F]

testvar = bob

# Trial A: This does not work
if testvar == ("fred" or "bob):
    statements

# Trial B: This does work
if textvar == "fred" or textvar == "bob":
    statements


Trial B is OK for 1 or 2 tests, but gets messy for 5 or 6.  What is the 
variation of Trial A that will work?  


Scott