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Python: If Then with Left Equivalent

MichaelWalden

Trying to calculate using Python in 10.3 the "Region" field with text based on the first two characters in a string field called "API_10". Basically, if the left two characters in "API_10" equal "33", then populate "Region" with "North".

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Accepted answers

JoshuaBixby

API_10[0:2] or API_10[:2]

All comments

MichaelWalden

Thanks Joshua!

DanPatterson_Retired

Or the most succinct descriptor... the python docs

TedKowal

When you do a slice or substring in Python and it starts with "0" then the second number is always the length. This confused me for a while ..... https://www.dotnetperls.com/substring-python

JoshuaBixby

Also, just pass the whole column to your function since the function does slicing and checking: Region = TextValue(!API_10!)

DanPatterson_Retired

Joshua is correct... python slicing is 0 based and exclusive of the slice number, hence

whatever[:2] or whatever[0:2] will return 0 and 1. The slice is [start:stop:step]

whatever <SPAN class="operator token">=</SPAN> <SPAN class="string token">'abcdefg'</SPAN>

whatever<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="number token">6</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN>
<SPAN class="string token">'ace'</SPAN>

whatever<SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="number token">6</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN>
<SPAN class="string token">'ace'</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

or skipping the start and stop

whatever<SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="number token">6</SPAN><SPAN class="punctuation token">]</SPAN>
<SPAN class="string token">'abcdef'</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

JoshuaBixby

API_10[0:2] or API_10[:2]

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