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POconfiguring a nested if loop to categorize a dataset
 

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  1. POconfiguring a nested if loop to categorize a dataset
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    <p>i have a file with following data:</p> <pre><code>line EF1 1 F Flu 5.7 3.221 9.332 line A2 1 C Car 3.2 5.22 1.22 line A1 1 C Car 3.11 4.21 2.13 line HF1 1 H Hyd 7.11 5.11 7.11 line EE2 1 F Flu 5.7 3.221 9.332 line A2 2 C Car 3.2 5.22 1.22 line EF1 2 F Flu 5.7 3.221 9.332 line EE2 2 F Flu 5.7 3.221 9.332 line A1 2 C Car 3.11 4.21 2.13 line HE2 2 H Hyd 7.11 5.11 7.11 </code></pre> <p>...1000+ lines.</p> <p>Here column no 3 represents Chain number. Now I have created different lists named : <code>EF</code> ,<code>EE</code>, <code>H</code> and <code>ace</code>. What I wanted to do is, if <code>EF1</code> and <code>HE1</code> both present from same <code>chain number</code> then write <code>EF data</code> in <code>'EF list'</code> and <code>HE data</code> in <code>H list</code>. On the other hand if only <code>'EF1'</code> present but no <code>HE1</code> in the same <code>chain number</code> then write it in <code>'ace list'</code>.</p> <p>Desired output is: </p> <pre><code>EF list: line EF1 1 F Flu 5.7 3.221 9.332 line EE2 2 F Flu 5.7 3.221 9.332 H list: line HF1 1 H Hyd 7.11 5.11 7.11 line HE2 2 H Hyd 7.11 5.11 7.11 ace list: line EE2 1 F Flu 5.7 3.221 9.332 line EF1 2 F Flu 5.7 3.221 9.332 </code></pre> <p>Now i was trying like,</p> <pre><code>inp = filename.read().strip().split('\n') for line in map(str.split,inp): codeName = line[1] shortName = line[3] </code></pre> <p>now as a rookie i am really lost here about how could i be able construct an <code>if loop</code> to get this checking done.<br> please provide some ideas on how could i progress on this !! (i was mistaken for my formatting error first time. corrected it!)</p>
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    1. USdiffracteD
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    1. COI do not completely get the logic, you want to group them by chain but while listing EF or EH or whatever they have both chains in desired output. Please explain a bit more to make it more clear.
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      1. USscriptmonster
    2. COIf you enumerate your input file and label your desired output with the same index. This will be very helpful to create a methodology for your question.
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      1. USscriptmonster
    3. CO@scriptmonster i am not getting way out with enumerate(). would you like to please explain a bit.?
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      1. USdiffracteD
 

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