Appendix

Arithmetical binary operator precedence

What is 3^2*4 + 2%5? The value (38) is determined by this “operator precedence table”. The table below is based on the table in § 5.14 of the Python Language Reference Manual by G. Rossum and F. Drake. the operations are listed here in increasing order of precedence.

Operators	Description
or	boolean or
and	boolean and
not	boolean not
in, not in	membership
is, is not	identity test
>, <=, >, >=, ==, !=	comparison
+, -	addition, subtraction
*, /, %	multiplication, division, remainder
**, ^	exponentiation

Therefore, to compute 3^2*4 + 2%5, Sage brackets the computation this way: ((3^2)*4) + (2%5). Thus, first compute 3^2, which is 9, then compute both (3^2)*4 and 2%5, and finally add these.