oganesson | A parser for chemical formula strings
kandi X-RAY | oganesson Summary
kandi X-RAY | oganesson Summary
A parser for chemical formula strings. An demo of this package in action can be found here: Molar Mass Calculator.
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QUESTION
I wanted to return the name of elements based on two conditions; even protons number and odd neutrons number. I've tried to print both tests and it turns out well. However, when I try to print the elements using 'and' logical, an error has occurred due to different broadcasting. I can't figure out how do I reshape it. Help me out.
The elements, protons and neutrons.
I've already converted elements, protons and neutrons into arrays.
The input;
...ANSWER
Answered 2020-Oct-16 at 15:26Apply the &
to the boolean tests, before indexing:
QUESTION
I'm writing a script in Python 2.7 that has the user input the atomic symbol for an element. The script then prints out information about the element.
However, I'm not sure how to have a class use a variable from the raw_input
. Here is the code with a couple of the 118 elements gone for readability:
ANSWER
Answered 2018-Mar-14 at 15:17The line x = raw_input("What element? ")
provides you with a string, say 'he'
, so when you call x.name
you are attempting to access an attribute of that string and not of the variable he
.
What you should do is store your elements in a dictionary instead of having them as variables and access them with the key provided by your user.
QUESTION
I have a CSV file in which record number, element symbol and element name is written. I want to extract those lines in which second column (i.e element symbol) does not contain the letters a,e,i,o,u,A,E,I,O,U.
So I wrote a script to achieve the same but it is giving me all the lines.
This is my script:
...ANSWER
Answered 2018-Feb-18 at 03:42Try
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