info ginac

4.7 Constants

Constants behave pretty much like symbols except that they return some specific number when the method .evalf() is called.

The predefined known constants are:

Name	Common Name	Numerical Value (to 35 digits)
`Pi`	Archimedes' constant	3.14159265358979323846264338327950288
`Catalan`	Catalan's constant	0.91596559417721901505460351493238411
`Euler`	Euler's (or Euler-Mascheroni) constant	0.57721566490153286060651209008240243