modify latex representation of user-defined function

[Andrei Berceanu]

I define a function gamma with the following code:

from sympy import *
x = Symbol('x')
class gamma(Function): pass

Its latex representation is

print latex(gamma(x))

\Gamma\left(x\right)

whereas I would like it to be

\gamma\left(x\right)

i.e. lowercase instead of capital. 

How can I achieve this?

[Björn Dahlgren]

This should do it:

class gamma(Function):
    def _latex(self, printer):
        return r'\gamma{\left(%s \right)}' % printer._print(self.args[0])

 

[Aaron Meurer]

You may want to subclass gamma (the original SymPy version) instead of
Function, so that you keep all the gamma behavior.

Aaron Meurer

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