Sympy is not doing the substitution of a symbol with a value when it has a specified assumption Question: I’m using the subs method to replace certain parameters in an expression with values prior to solving the equation. The following simple example works fine: from sympy import Symbol Q = Symbol("Q") exp1 = Q + …
Substituting found regex based on rank Question: In python how could we replace all matched cases of a pattern say ‘(AB)(.*?)(CD)’ in text based on rank? for example reach from bla bla blab ABftrCD bla bla ABgtCD bla blab ABnyhCD to bla bla blab ABftrCDn1 bla bla ABgtCDnn2 bla blab ABnyhCDnnn3 Asked By: moshtaba || …
Why doesn't work in Python regexp substitutions, i.e. with sub() or expand(), while match.group(0) does, and also 1, 2, …? Question: Why doesn’t work (i.e. to return the full match) in Python regexp substitutions, i.e. with sub() or match.expand(), while match.group(0) does, and also 1, 2, … ? This simple example (executed in Python 3.7) …
How to get values from dictionary in jinja when key is a variable? Question: I’m trying to retrieve entries from a python dictionary in jinja2, but the problem is I don’t know what key I want to access ahead of time – the key is stored in a variable called s.course. So my problem is …
Remove all newlines from inside a string Question: I’m trying to remove all newline characters from a string. I’ve read up on how to do it, but it seems that I for some reason am unable to do so. Here is step by step what I am doing: string1 = “Hello n World” string2 = …
Substitutions inside Sphinx code blocks aren't replaced Question: In this reST example meant to be rendered by Sphinx, |yaco_url| doesn’t get replaced because it’s in a code-block: .. |yaco_url| replace:: http://yaco.es/ You can use wget to download it: .. code-block:: console $ wget |yaco_url|package.tar.gz I wonder if there is some way to force the replacement …
Substitute multiple whitespace with single whitespace in Python Question: I have this string: mystring = ‘Here is some text I wrote ‘ How can I substitute the double, triple (…) whitespace chracters with a single space, so that I get: mystring = ‘Here is some text I wrote’ Asked By: creativz || Source Answers: A …
