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ricchen
c4cs-f18-rpn
Commits
9ae23a82
Commit
9ae23a82
authored
6 years ago
by
ricchen
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fix too many args
parent
78233c96
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rpn.py
+8
-2
8 additions, 2 deletions
rpn.py
with
8 additions
and
2 deletions
rpn.py
+
8
−
2
View file @
9ae23a82
...
...
@@ -13,12 +13,18 @@ def calculate(arg):
elif
token
==
'
-
'
:
result
=
val2
-
val1
stack
.
append
(
result
)
if
len
(
stack
)
>
1
:
raise
ValueError
(
'
Too many arguments on the stack
'
)
return
stack
[
0
]
def
main
():
while
True
:
result
=
calculate
(
input
(
"
rpm calc>
"
))
print
(
result
)
try
:
result
=
calculate
(
input
(
"
rpm calc>
"
))
print
(
result
)
except
ValueError
:
pass
if
__name__
==
'
__main__
'
:
main
()
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