>>> a = 1
>>> a2 = a%2
>>> a2
1
>>> 8*a2
8
>>> 8*(a%2)
8
>>> 8*a%2
0
>>>
The * is being given equal priority to %.
Why isn't % given higher priority than *?
Also, why am I getting a syntax error in the following?
The def in the definition of the second function is being highlighted.
IDLE 1.1.2
>>> def transfac(v):
a = v[0]
b = v[1]
c = v[2]
d = v[3]
m = v[4]
n = v[5]
z = v[6]
k = v[7]
k = k + 1
a2 = a%2
b2 = b%2
c2 = c%2
d2 = d%2
ma = ((d - n * c)/(a*m + b))/2
na = ((d - m * b)/(a * n +c) )/2
j = 8 * a2 + 4 * b2 + 2 * c2 + d2
if j == 0: a,b,c,d,m,n = a/2,b/2,c/2,d/2,m,n
if j == 1: a,b,c,d,m,n = -1,-1,-1,-1,-1,-1
if j == 2: a,b,c,d,m,n = a,b/2,c,d/2,m,2*n
if j == 3: a,b,c,d,m,n = a,(a+b)/2,c,(d-c)/2,2*n+1
if j == 4: a,b,c,d,m,n = a,b,c/2,d/2,2*m,n
if j == 5: a,b,c,d,m,n = a,b,(a+c)/2,(d-b)/2,2*m+1,n
if j == 6: a,b,c,d,m,n = a,a*na+b,a*ma+c,d-a*ma*na - b*ma - c * na,m+ma
n+na
if j == 7: a,b,c,d,m,n = a,a*na+b,a*ma+c,d-a*ma*na - b*ma - c * na,m+ma
n+na
if j == 8: a,b,c,d,m,n = -1,-1,-1,-1,-1,-1
if j == 9: a,b,c,d,m,n = 2*a,a+b,a+c,(d-a-b-c)/2,2*m+1,2*n+1
if j == 10: a,b,c,d,m,n = a,a*na+b,a*ma+c,d-a*ma*na - b*ma - c * na,m+ma
n+na
if j == 11: a,b,c,d,m,n = 2*a,a+b,c,(d-c)/2
if j == 12: a,b,c,d,m,n = a,a*na+b,a*ma+c,d-a*ma*na - b*ma - c * na,m+ma
n+na
if j == 13: a,b,c,d,m,n = 2*a,b,a+c,(d-b)/2,m,2*n+1
if j == 14: a,b,c,d,m,n = 2*a,b,c,d/2,2 *m,2*n
if j == 15: a,b,c,d,m,n = a,a*na+b,a*ma+c,d-a*ma*na - b*ma - c * na,m+ma
n+na
z = a * d + b * c
v = [a,b,c,d,m,n,z,k]
return v
comment: the def in the following line has been highlighted.
def gcd(a,b):
r2 = a
r3 = b
flag = 1
while flag>0:
if r3 == 0:
return r2
flag = 0
else:
r1=r2
r2=r3
r3 = r1 - r2*(r1/r2)
def factor0(z):
v = [1,0,0,341,1,1,341,1]
v[3] = z
v[6]= z
flag = 1
while flag > 0:
v = transfac(v)
g = gcd(z,v[0])
if g>1:
if g<z:
return g
flag = 0
g = gcd(z,v[1])
if g>1:
if g<z:
return g
flag = 0
g = gcd(z,v[2])
if g>1:
if g<z:
return g
flag = 0
g = gcd(z,v[3])
if g>1:
if g<z:
return g
flag = 0
if v[1]+v[2]+v[3]-v[4]==0:
return v[0]+v[1]
flag = 0
if v[1]+v[2]-v[3]+v[4]==0:
return v[0]+v[1]
flag = 0
if v[1]-v[2]+v[3]+v[4]==0:
return v[0]+v[2]
flag = 0
if -v[1]+v[2]+v[3]+v[4]==0:
return v[3]+v[1]
flag = 0
SyntaxError: invalid syntax
>>>
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