Program adding '' to a list

Python Help
1

I’m making a little calculator in python. Here’s the code so far.

while True:
  operatio = input('Enter here: ')
  operation = operatio + ' '
  tempnumstr = ''
  numlst = []
  operationstr = ''
  for i in operation:
    if i.isnumeric() == True:
      tempnumstr += i
    else:
      operationstr += i
      numlst.append(tempnumstr)
      tempnumstr = ''
print(numlst)
print(operationstr)

Basically I’m trying to isolate the numbers and the operation so I can then have it do that operation. If I input 18 + 12, for example, the output it will give is:

['18', '', '', '12']
 +

I want to output to be this:

['18', '12']
 +

Is there some way for me to do this?

2

[…]

operationstr = ‘’
for i in operation:
if i.isnumeric() == True:
tempnumstr += i
else:
operationstr += i
numlst.append(tempnumstr)
tempnumstr = ‘’
[…]

You could exclude whitespace by testing for i.isspace().

You basicly have 3 classes of characters, not 2: numerals, whitespace,
operators. Recognise them all.

Cheers,
Cameron Simpson cs@cskk.id.au