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try to find the bug...

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Lafrite 2015-04-20 21:21:19 +02:00
parent 0e140cb304
commit 84a04841aa
1 changed files with 73 additions and 106 deletions
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179
pymath/expression.py
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@ -11,10 +11,10 @@ from .random_expression import RdExpression
__all__ = ['Expression'] __all__ = ['Expression']
class Expression(Explicable): class Expression(Explicable):
"""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
@ -86,7 +86,8 @@ class Expression(Explicable):
if len(expression.postfix_tokens) == 1: if len(expression.postfix_tokens) == 1:
token = expression.postfix_tokens[0] token = expression.postfix_tokens[0]
if hasattr(token, 'simplify') and hasattr(token, 'explain'): if hasattr(token, 'simplify') and hasattr(token, 'explain'):
return expression.postfix_tokens[0] ans = expression.postfix_tokens[0]
return ans
elif type(token) == int: elif type(token) == int:
# On crée un faux int en ajoutant la méthode simplify et simplified et la caractérisique isNumber # On crée un faux int en ajoutant la méthode simplify et simplified et la caractérisique isNumber
@ -124,14 +125,27 @@ class Expression(Explicable):
def simplify(self): def simplify(self):
""" Compute entirely the expression and return the result with .steps attribute """ """ Compute entirely the expression and return the result with .steps attribute """
#from .render import txt
#with Expression.tmp_render(txt):
# print("self -> ", self, " --> ", len(self.steps))
self.compute_exp() self.compute_exp()
#with Expression.tmp_render(txt):
# print("|-> self.child -> ", self.child, " --> ", len(self.child.steps))
self.simplified = self.child.simplify() self.simplified = self.child.simplify()
if self.simplified != self.child: #print('|-- len(self.simplified.steps)=', len(self.child.steps) , " + ", len(self.simplified.steps))
try: self.simplified.steps = self.child.steps + self.simplified.steps
self.simplified.steps = self.child.steps + self.simplified.steps #if self.simplified != self.child:
except AttributeError: # try:
pass # self.simplified.steps = self.child.steps + self.simplified.steps
# except AttributeError as e:
# #print(e)
# pass
#with Expression.tmp_render(txt):
# print("End self.simplified -> ", self.simplified, " --> ", len(self.simplified.steps))
return self.simplified return self.simplified
def compute_exp(self): def compute_exp(self):
@ -193,26 +207,53 @@ class Expression(Explicable):
tmpTokenList += tokenList tmpTokenList += tokenList
self.child = Expression(tmpTokenList) self.child = Expression(tmpTokenList)
#from .render import txt
#with Expression.tmp_render(txt):
# print('------------')
# print("self -> ", self)
# print("self.child -> ", self.child)
# print("self.child.steps -> ", [str(i) for i in self.child.steps], ' -- ', len(self.child.steps))
steps = self.develop_steps(tmpTokenList)
#with Expression.tmp_render(txt):
# print('************')
# print("steps -> ", [str(i) for i in steps], ' -- ', len(steps))
# print('************')
#if steps !=[] and ini_step != steps[0]:
# self.child.steps = [ini_step] + steps
#else:
# self.child.steps = steps
if self.child.postfix_tokens == ini_step.postfix_tokens: if self.child.postfix_tokens == ini_step.postfix_tokens:
self.child.steps = self.develop_steps(tmpTokenList) self.child.steps = steps
else: else:
self.child.steps = [ini_step] + self.develop_steps(tmpTokenList) self.child.steps = [ini_step] + steps
#with Expression.tmp_render(txt):
# print('++++')
# print("self.child.steps -> ", [str(i) for i in self.child.steps], ' -- ', len(self.child.steps))
def develop_steps(self, tokenList): def develop_steps(self, tokenList):
""" From a list of tokens, it develops steps of each tokens """ """ From a list of tokens, it develops steps of each tokens """
# TODO: Attention les étapes sont dans le mauvais sens |lun. avril 20 10:06:03 CEST 2015
print("---- develop_steps ------")
print("tokenList -> ", tokenList)
tmp_steps = [] tmp_steps = []
with Expression.tmp_render(): with Expression.tmp_render():
for t in tokenList: for t in tokenList:
if hasattr(t, "explain"): if hasattr(t, "explain"):
tmp_steps.append([i for i in t.explain()]) tmp_steps.append([i for i in t.explain()])
else: else:
tmp_steps.append(t) tmp_steps.append([t])
if max([len(i) if type(i) == list else 1 for i in tmp_steps]) == 1: print("tmp_steps -> ", tmp_steps)
if max([len(i) for i in tmp_steps]) == 1:
# Cas où rien n'a dû être expliqué. # Cas où rien n'a dû être expliqué.
return [] return []
else: else:
tmp_steps = expand_list(tmp_steps)[:-1] tmp_steps = expand_list(tmp_steps)[:-1]
steps = [Expression(s) for s in tmp_steps] steps = [Expression(s) for s in tmp_steps]
print("steps -> ", steps)
return steps return steps
@classmethod @classmethod
@ -347,105 +388,31 @@ def untest(exp):
print("\n") print("\n")
if __name__ == '__main__': if __name__ == '__main__':
#render = lambda _,x : str(x) #print('\n')
#Expression.set_render(render) #A = Expression.random("( -8 x + 8 ) ( -8 - ( -6 x ) )")
#exp = Expression("1/2 - 4") #Ar = A.simplify()
#print(list(exp.simplify())) #print("Ar.steps -> ", Ar.steps)
#for i in Ar.steps:
#Expression.set_render(txt) # print(i)
#exp = "2 ^ 3 * 5" #print("------------")
#untest(exp) #for i in Ar.explain():
#exp = "2x + 5"
#untest(exp)
#Expression.set_render(tex)
#untest(exp1)
#from pymath.operator import op
#exp = [2, 3, op.pw, 5, op.mul]
#untest(exp)
#untest([Expression(exp1), Expression(exp), op.add])
#exp = "1 + 3 * 5"
#e = Expression(exp)
#f = -e
#print(f)
#exp = "2 * 3 * 3 * 5"
#untest(exp)
#exp = "2 * 3 + 3 * 5"
#untest(exp)
#exp = "2 * ( 3 + 4 ) + 3 * 5"
#untest(exp)
#exp = "2 * ( 3 + 4 ) + ( 3 - 4 ) * 5"
#untest(exp)
#
#exp = "2 * ( 2 - ( 3 + 4 ) ) + ( 3 - 4 ) * 5"
#untest(exp)
#
#exp = "2 * ( 2 - ( 3 + 4 ) ) + 5 * ( 3 - 4 )"
#untest(exp)
#
#exp = "2 + 5 * ( 3 - 4 )"
#untest(exp)
#exp = "( 2 + 5 ) * ( 3 - 4 )^4"
#untest(exp)
#exp = "( 2 + 5 ) * ( 3 * 4 )"
#untest(exp)
#exp = "( 2 + 5 - 1 ) / ( 3 * 4 )"
#untest(exp)
#exp = "( 2 + 5 ) / ( 3 * 4 ) + 1 / 12"
#untest(exp)
#exp = "( 2+ 5 )/( 3 * 4 ) + 1 / 2"
#untest(exp)
#exp="(-2+5)/(3*4)+1/12+5*5"
#untest(exp)
#exp="-2*4(12 + 1)(3-12)"
#untest(exp)
#exp="(-2+5)/(3*4)+1/12+5*5"
#untest(exp)
# TODO: The next one doesn't work |ven. janv. 17 14:56:58 CET 2014
#exp="-2*(-a)(12 + 1)(3-12)"
#e = Expression(exp)
#print(e)
## Can't handle it yet!!
#exp="-(-2)"
#untest(exp)
#print("\n")
#exp = Expression.random("({a} + 3)({b} - 1)", ["{a} > 4"])
#for i in exp.simplify():
# print(i) # print(i)
from .fraction import Fraction #print(type(Ar))
f1 = Fraction(3,5)
f2 = Fraction(5,10)
q = f1+f2
print("---------")
print(q.steps)
print("---------")
for i in q.explain():
print(i)
print('\n-----------')
A = Expression.random("2 / 3 + 4 / 5")
Ar = A.simplify()
#print("Ar.steps -> ", Ar.steps)
#for i in Ar.steps:
# print(i)
#print("------------")
#for i in Ar.explain():
# print(i)
#print(type(Ar))
#import doctest #import doctest
#doctest.testmod() #doctest.testmod()