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How to find a particular text query within a multilinestring in Python

MazelTov27 answered on September 12, 2022 Popularity 1/10 Helpfulness 1/10

answer How to find a particular text query within a multilinestring in Python

How to find a particular text query within a multilinestring in Python

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letters_amazon = '''
We spent several years building our own database engine,
Amazon Aurora, a fully-managed MySQL and PostgreSQL-compatible
service with the same or better durability and availability as
the commercial engines, but at one-tenth of the cost. We were
not surprised when this worked.
'''


find = lambda x, q: x[x.find(q)-18:x.find(q)+18] if q in x else -1
'''
Code explanation:
- Want to find the query in the text and return its
immediate environment, up to 18 positions around the found
query.
- Define a lambda function with two arguments: a string
value x, and a query q to search for in the text.
- The function find(x, q) finds
the string query q in the string text x.
- If the query q does not appear in the string x, you directly
return the result -1. Otherwise, you use slicing on the text
string to carve out the first occurrence of the query, plus 18
characters to the left of the query and 18 characters to the
right, to capture the query’s environment. 
- find the index of the first occurrence of q in x is using the string
function x.find(q). You call the function twice: to help determine
the start index and the stop index of the slice,
'''
print(find(letters_amazon, 'cost'))

Popularity 1/10 Helpfulness 1/10 Language python

Source: Grepper

Tags: find multilinestring python text

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Contributed on Sep 12 2022

MazelTov27

0 Answers Avg Quality 2/10

How to find a particular text query within a multilinestring in Python

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