# How to configure my array to perform consider number with decimal as one element?

```# input a string
str = input("Enter the expression: ")
# make an array to check the operator
opArr = ["+","-","*","/"]
# check for operator
op = ""
for operator in opArr:
if str.find(operator) == 1:
op = operator
# split the array
splitStr = str.split(op)
print(splitStr)
# perform mathematical operations
if op == "+":
result = float(splitStr) + float(splitStr)
elif op == "-":
result = float(splitStr) - float(splitStr)
elif op == "*":
result = float(splitStr) * float(splitStr)
elif op == "/":
result = float(splitStr) / float(splitStr)
else:
result = "Something Went Wrong!!!"

print(result)
```

Here Output is : Enter an expression: 5+5 // works output is 10

but when I enter 5.0+5 or any other decimal number it prints out an error.

Well, I can see the problem that split() method converts the string into a char array. Is there a way to convert it to a string array or any other way to hold an element like [“5.0”, “5”] like that so the output is 10.0 for 5.0+5?

Return the lowest index in the string where substring sub is found within the slice `s[start:end]`. Optional arguments start and end are interpreted as in slice notation. Return `-1` if sub is not found.
The problem is that during `5.0+5`, the operator `+` is present on the 3rd index position. But 3 is not equal to 1. So `op` remains the same. And `split` needs some separator on which it could split the string.
You can use `in` operator here which returns `True` if a specific substring is found in the main string.
```for operator in opArr: