Op Wednesday 29 Apr 2015 15:14 CEST schreef Dave Angel: > On 04/29/2015 08:42 AM, Cecil Westerhof wrote: >> I have the folowing print statements: >> print( >> 'Calculating fibonacci_old, fibonacci_memoize and ' >> 'fibonacci_memoize once for {0} '.format(large_fibonacci)) >> >> >> print( >> 'Calculating fibonacci_old, fibonacci_memoize and ' >> 'fibonacci_memoize once for {0} '.format(large_fibonacci) + >> 'to determine speed increase') >> >> print( >> 'Calculating fibonacci_old, fibonacci_memoize and ' >> 'to determine speed increase' >> 'fibonacci_memoize once for {0} '.format(large_fibonacci)) >> >> >> print( >> 'Calculating fibonacci_old, fibonacci_memoize and ' >> 'fibonacci_memoize once for {0} '.format(large_fibonacci) >> 'to determine speed increase') >> >> The first three work, but the last gives: >> 'to determine speed increase') >> ^ >> SyntaxError: invalid syntax >> >> Not very important, because I can use the second one, but I was >> just wondering why it goes wrong. >> > > Adjacent string literals are concatenated. But once you've called a > method (.format()) on that literal, you now have an expression, not > a string literal. > > You could either change the last line to > > + 'to determine speed increase') > > or you could concatenate all the strings before calling the format > method: > > > print( > 'Calculating fibonacci_old, fibonacci_memoize and ' > 'fibonacci_memoize once for {0} ' > 'to determine speed increase' .format(large_fibonacci))
I now use this, I did not know that the addjacent-concatenation occurred at compile time. I spend a ‘little‘ time, but it was worth it. From the amount of messages you could think I am a spammer. ;-) -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof -- https://mail.python.org/mailman/listinfo/python-list