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random generation for Equation

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This commit is contained in:
Benjamin Bertrand 2016-03-22 10:42:00 +03:00
parent ba324ec995
commit f648e94a37
1 changed files with 18 additions and 13 deletions
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31
pymath/calculus/equation.py
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@ -14,19 +14,24 @@ __all__ = ['Equation']
class Equation(object): class Equation(object):
"""A calculus expression. Today it can andle only expression with numbers later it will be able to manipulate unknown""" """A calculus expression. Today it can andle only expression with numbers later it will be able to manipulate unknown"""
# @classmethod @classmethod
# def random(self, form="", conditions=[], val_min=-10, val_max=10): def random(self, form="", conditions=[], val_min=-10, val_max=10):
# """Create a random expression from form and with conditions """Create a random expression from form and with conditions
#
# :param form: the form of the expression (/!\ variables need to be in brackets {}) :param form: the form of the expression (/!\ variables need to be in brackets {})
# :param conditions: condition on variables (/!\ variables need to be in brackets {}) :param conditions: condition on variables (/!\ variables need to be in brackets {})
# :param val_min: min value for generate variables :param val_min: min value for generate variables
# :param val_max: max value for generate variables :param val_max: max value for generate variables
#
# """ >>> Equation.random("{a}x + {b} = 0") # doctest:+ELLIPSIS
# random_generator = RdExpression(form, conditions) < Equation [..., 0]>
# return Expression(random_generator(val_min, val_max)) >>> Equation.random("{a}x + {b} = _", conditions = ["{a}==2"]) # doctest:+ELLIPSIS
# < Equation [2 x ...]>
"""
random_generator = RdExpression(form, conditions)
return Equation(random_generator(val_min, val_max))
def __init__(self, exp_str = "", left_poly = Expression([0]), right_poly = Expression([0])): def __init__(self, exp_str = "", left_poly = Expression([0]), right_poly = Expression([0])):
"""Create the equation """Create the equation