energy['Country'] = energy['Country'].str.replace(r" \(.*\)","")
I specifically do not understand what this part is doing -- str.replace(r" \(.*\)","")
Please let me know. Thanks!
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Andrej Kesely
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ahajizadeh
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1Context please. As there is no code of how `energy` was generated, there are a few options of what this piece of code could be doing. – The Matt Jan 11 '20 at 21:02
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Thank you for the info! Can you please explain to me what is happening at this part of the code `(r" \(.*\)","")` – ahajizadeh Jan 12 '20 at 02:53
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In the future, you may want to refer to this guide: https://stackoverflow.com/help/how-to-ask – The Matt Jan 13 '20 at 00:44
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Will do - thank you! – ahajizadeh Jan 14 '20 at 06:09
1 Answers
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First, = energy['Country'] is getting the value from energy that corresponds to 'Country'.
This piece could be separated as follow:
obj = energy['Country']
energy['Country'] = obj.str.replace(r" \(.*\)","")
Next, the attribute str is accessed from obj.
Again separating that out:
obj = energy['Country']
attr = obj.str
energy['Country'] = attr.replace(r" \(.*\)","")
And then the function replace() is called off of the value str.
Note, the value str here is not the same as the builtin class str. Instead it is an attribute of the class that is returned from energy['Country'].
The Matt
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i guess the OP wanted to know what `(r" \(.*\)","")` exactly replaces in that string – Mihai T Jan 11 '20 at 22:03
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It's a string literal. See more here: https://stackoverflow.com/a/4780104 – The Matt Jan 13 '20 at 00:02