import sys
class Calc :
def __init__(self,a,b):
self.a = a
self.b = b
def sum(self):
return (self.a + self.b)b)
def sub(self):
return (self.a - self.b)b)
a = sys.argv[1:3]
a1 = a[1]
a2 = a[2]
calc = Calc(a1,a2)
q = int("Choose an operator\n1. Add 2. Subtract: ")))
if q is 1 :
print(calc.sum())
elif q is 2 :
print(calc.sub())
else :
print("Error")
From
a = sys.argv[1:3]
a1 = a[1]
a2 = a[2]
calc = Calc(a1,a2)
a2 = part a[2]
There was this error. I think it's the right part, but I don't understand why
python
Here's a quick way to debug.
a = sys.argv[1:3]
import pdb; add pdb.set_trace() #
a1 = a[1]
a2 = a[2]
calc = Calc(a1,a2)
When you perform the above and enter the factor value, the debugger is performed and the breakpoint is set at a1 = a[1] to stop.
(pdb) p a
If you do so, you can see the value of the a variable with a1 = a[1] stopped.
Verify that the variable value of a is correctly contained.
Then n runs one line at a time c runs continuously, so press c to run the program to the end.
The index of the list starts from zero, not from one.
a1 = a[0] #a1 = a[1]
a2 = a[1] #a2 = a[2]
Please change it as above.
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