is_constraint_added

demo.py

from casadi import *

opti = Opti()

x = opti.variable(10)
y = opti.variable(10)

opti.subject_to(x>=0)
opti.subject_to(x+y==0)
opti.subject_to(y>=0)


def is_constraint_added(opti,g):
	# Was g already added?

	for c in opti.debug.constraints():
		try:
			res = evalf(cse(c-g))
			if norm_2(res)==0:
				print("Allready added!")
				print(opti.debug.describe(c))
				return True
		except:
			pass
	return False
	

is_constraint_added(opti,x+y==0)