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[英]Another UnboundLocalError: local variable referenced before assignment Issue
[英]UnboundLocalError: local variable referenced before assignment issue
class Factor:
def __init__(self, a, b, c):
self.a = a
self.b = b
self.c = c
def commonFactor(self):
global cfa
cfa = self.a
cfb = self.b
while cfb:
cfa, cfb = cfb, cfa % cfb
return cfa
def simplifyIntegers(self):
self.a = int(self.a / cfa)
self.b = int(self.b / cfa)
self.c = int(self.c / cfa)
return self.c
def coefficients(self):
if self.a == 1:
coe1 = 1
coe2 = 1
else:
coe1 = self.a
coe2 = 1
return self.coe1
def getFactors(self):
positivec = abs(self.c)
global result
result = set()
for i in range(1, int(positivec ** 0.5) + 1):
div, mod = divmod(positivec, i)
if mod == 0:
result |= {i, div}
return result
def numbers(self):
if self.c < 0:
poslist = [int(x) for x in result]
neglist = [-(x) for x in poslist]
numpos = poslist[0]
numneg = neglist[-1]
for i in poslist:
number = numpos + numneg
poslist.remove(numpos)
neglist.remove(numneg)
if number == self.b:
num1 = numpos
num2 = numneg
return num1
elif len(poslist) > 0:
numpos = poslist[0]
numneg = neglist[-1]
else:
print("This equation can not be fully factored.")
if self.c > 0:
poslist1 = [int(x) for x in result]
poslist2 = [int(x) for x in result]
neglist1 = [-(x) for x in poslist1]
neglist2 = [-(x) for x in poslist1]
numpos1 = poslist1[0]
numpos2 = poslist2[-1]
numneg1 = neglist1[0]
numneg2 = neglist2[-1]
for i in poslist1:
number = numpos1 + numpos2
poslist1.remove(numpos1)
poslist2.remove(numpos2)
if number == self.b:
num1 = numpos1
num2 = numpos2
return num1
elif len(poslist1) > 0:
numpos1 = poslist1[0]
numpos2 = poslist2[-1]
else:
print("This equation can not be factored.")
for i in neglist1:
number = numneg1 + numneg2
neglist1.remove(numneg1)
neglist2.remove(numneg2)
if number == self.b:
num1 = numneg1
num2 = numneg2
return num1
elif len(neglist1) > 0:
numpos1 = neglist1[0]
numpos2 = neglist2[-1]
else:
print("This equation can not be factored.")
def factoredForm(self):
cfa = str(cfa)
coe1 = str(coe1)
num1 = str(num1)
coe2 = str(coe2)
num2 = str(num2)
equation = (cfa,"(",coe1,"x + ",num1,")(",coe2,"x + ",num2,")")
return equation
a = input("What is A?")
a = int(a)
b = input("What is B?")
b = int(b)
c = input("What is C?")
c = int(c)
e = Factor(a,b,c)
print(e.factoredForm())
我不斷收到此錯誤-
UnboundLocalError: local variable 'cfa' referenced before assignment
我看過很多有關如何解決此問題的內容,但是似乎都沒有提供解決此問題的方法。 我已經將變量設置為全局變量,但這仍然行不通,並且其他任何操作都沒有更好。 如果您需要了解二次函數,這是我編寫的用於二次冪分解的程序。 感謝任何可以提供幫助的人。
在這里看起來您正在嘗試創建本地cfa
,它是全局cfa
的str版本。
def factoredForm(self):
cfa = str(cfa)
您不能在同一范圍內混合使用兩種類型的訪問權限。 您應該對本地變量使用其他名稱。
或者,您可以這樣編寫函數
def factoredForm(self):
return map(str, (cfa, "(", coe1, "x + " ,num1, ")(", coe2, "x + " ,num2 ,")"))
這些陳述:
cfa = str(cfa)
coe1 = str(coe1)
num1 = str(num1)
coe2 = str(coe2)
num2 = str(num2)
建議您將所有這些變量都作為實例變量(而不是全局變量)。 我認為您已經找到了每種用法,並更改了訪問它們的方式。
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