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Groups > comp.lang.python > #61752

Code suggestion - List comprehension

Date 2013-12-12 15:40 -0500
Subject Code suggestion - List comprehension
From Shyam Parimal Katti <spk265@nyu.edu>
Newsgroups comp.lang.python
Message-ID <mailman.4021.1386882662.18130.python-list@python.org> (permalink)

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Hello,

I have a list of sql queries, some which are split across multiple list
elements e.x.
['drop table sample_table;', 'create table sample_test', '(col1 int);',
'select col1 from', ' sample_test;']

A semi-colon in the string value  indicates the termination of a sql query.
So the expected out come is a conversion to a list of valid sql queries:
['drop table sample_table;', 'create table sample_test (col1 int);',
'select col1 from sample_test;']

Here is the code that does that:

sample = ['drop table sample_table;', 'create table sample_test', '(col1
int);', 'select col1 from', ' sample_test;']
pure_sqls = []
query_holder= ''
for each_line in sample:
    query_holder += each_line
    if query_holder.endswith(';'):
        pure_sqls.append(query_holder)
        query_holder = ''


Is there a way to do this by eliminating explicit creation of new
list(pure_sqls) and a temporary variable(query_holder)? Using list
comprehension? Though I don't want to put the shorter version in
production(if it is difficult to understand), I am looking if this can be
done with list comprehension since I am trying to learn list comprehension
by using it in such scenarios.

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Code suggestion - List comprehension Shyam Parimal Katti <spk265@nyu.edu> - 2013-12-12 15:40 -0500

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