Pythonic way to create a long multi-line string
Posted By: Anonymous
I have a very long query. I would like to split it in several lines in Python. A way to do it in JavaScript would be using several sentences and joining them with a +
operator (I know, maybe it’s not the most efficient way to do it, but I’m not really concerned about performance in this stage, just code readability). Example:
var long_string = 'some text not important. just garbage to' +
'illustrate my example';
I tried doing something similar in Python, but it didn’t work, so I used to split the long string. However, I’m not sure if this is the only/best/pythonicest way of doing it. It looks awkward.
Actual code:
query = 'SELECT action.descr as "action", '
'role.id as role_id,'
'role.descr as role'
'FROM '
'public.role_action_def,'
'public.role,'
'public.record_def, '
'public.action'
'WHERE role.id = role_action_def.role_id AND'
'record_def.id = role_action_def.def_id AND'
'action.id = role_action_def.action_id AND'
'role_action_def.account_id = ' + account_id + ' AND'
'record_def.account_id=' + account_id + ' AND'
'def_id=' + def_id
Solution
Are you talking about multi-line strings? Easy, use triple quotes to start and end them.
s = """ this is a very
long string if I had the
energy to type more and more ..."""
You can use single quotes too (3 of them of course at start and end) and treat the resulting string s
just like any other string.
NOTE: Just as with any string, anything between the starting and ending quotes becomes part of the string, so this example has a leading blank (as pointed out by @root45). This string will also contain both blanks and newlines.
I.e.,:
' this is a veryn long string if I had then energy to type more and more ...'
Finally, one can also construct long lines in Python like this:
s = ("this is a very"
"long string too"
"for sure ..."
)
which will not include any extra blanks or newlines (this is a deliberate example showing what the effect of skipping blanks will result in):
'this is a verylong string toofor sure ...'
No commas required, simply place the strings to be joined together into a pair of parenthesis and be sure to account for any needed blanks and newlines.
Answered By: Anonymous
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