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+--- Thread: Remove Parts of a String (/thread-199.html)
Remove Parts of a String - Dean Stackhouse - Sep-29-2016
Hello,
I'm quite new to python and am attempting to do some coding on a Raspberry Pi.
I have a sensor that gives an output in the following format.
628.6,339,0.30,1.000
I need to splice it so it just gives me the 628.6
The string isn't always the same length so i need to chop it on the first comma.
I also need to change the decimal point so it looks like this but that should be easy enough once its just a number.
6.286
Thanks
RE: Remove Parts of a String - j.crater - Sep-29-2016
Hello Dean, I believe you have a couple of options available. You can do:
some_string = "628.6,339,0.30,1.000"
split_string = some_string.split(',')split_string is now a list of strings:['628.6', '339', '0.30', '1.000']
So you need the first element of this list:
first_element = split_string[0]At this point first_element is still a string, but you can convert it to a float and do arithmetics with it.
RE: Remove Parts of a String - wavic - Sep-29-2016
Or you can get the first element of returned list at once with split
first_element = some_string.split(',')[0]
RE: Remove Parts of a String - Dean Stackhouse - Sep-29-2016
Thanks j.crater for the solution and thanks wavic for compressing the code.
I ended up using the following line to query my EC sensor and convert the output to from μS/cm to CF
output = float(AtlasI2C().query('r').split(',')[0])/100
RE: Remove Parts of a String - Kebap - Sep-29-2016
Thanks for reporting back and again welcome to Python! :)
RE: Remove Parts of a String - wavic - Sep-29-2016
It's not about compressing the code. It's about how Python works. I just start to clear it for myself.
Welcome!