argparse epilog call function?

[Didymus]

Greetings,

I might be barking up the wrong tree, but was wondering if there's a way to have the argpasre epilog call a function. for example:

epilog=Examples()

Where Examples is:

def Examples():
text = """Lots of examples"""
print(text.format())

I've place this in and found that it prints out no matter if I use the -h or
not and also it prints first.... If I do:

epilog='Single Example'

it works as intended, unfortunately, I need to show several examples. Just wondering if someone has found a why to do this (without making a custom help).

thanks
Tom

[Chris Angelico]

The way you've written it, Examples() will be called before argparse
does its work, and whatever it returns becomes the epilog. Can you
work your function such that it returns a string, instead of printing
something? Or is it a very expensive function?

ChrisA

[Fox]

what " -h " are you even talkin bout ?

def Examples():
text = """Lots of examples"""
print(text.format())

epilog='where the heck to put a -h ?????? '

epilog=Examples()

[Chris Angelico]

On Wed, Jun 28, 2017 at 12:09 AM, Fox <fir...@firemail.cc> wrote:
> what " -h " are you even talkin bout ?
>
>
>
>

> def Examples():
> text = """Lots of examples"""
> print(text.format())
>
>
>

> epilog='where the heck to put a -h ?????? '
>
> epilog=Examples()

List admins, this person has been abusing the pydotorg-www list for
several days. Can he please be banned?

ChrisA

[Peter Otten]

Here's a way using a custom *formatter*:

$ cat epilog.py
import argparse

class MyHelpFormatter(argparse.HelpFormatter):
def add_text(self, text):
if callable(text):
text = text()
return super().add_text(text)

def examples():
return "yadda yadda"

parser = argparse.ArgumentParser(
epilog=examples,
formatter_class=MyHelpFormatter
)
parser.add_argument("--foo")

parser.parse_args()
$ python3 epilog.py -h
usage: epilog.py [-h] [--foo FOO]

optional arguments:
-h, --help show this help message and exit
--foo FOO

yadda yadda
$

[Didymus]

Well, I thought I had a good idea to work around this by setting a string to the formatted text and then use that string in the epilog:

text = Example()
#
parser = argparse.ArgumentParser(prog=sys.argv[0],
description="Example Arg Parse",
epilog=text)

I had to change the Example function to return the string and in a print it works fine, however when used in the argsparse, the formatting is lost...

-T

[Didymus]

Greetings,

I got what I was looking for:

def Examples():
text = """Lots of examples"""

return text.format()

parser = argparse.ArgumentParser(prog=sys.argv[0],

formatter_class=argparse.RawTextHelpFormatter,
description="Argparse Example",
epilog=text)

The key here is the "formatter_class=argparse.RawTestHelpFormatter". Once I set that the epilog prints out nicely formatted:

% ./test.py -h
usage: ./test.py [-h] [-n NAME] [-f | -m | -r | -v]

Argparse Example.

optional arguments:
-h, --help show this help message and exit

-n NAME, --name NAME Name to be created.

Examples:
Ex 1:
./test.py -n juser

Ex 2:
./test.py -n juser -r

...

Thanks for all the help.
-Tom

[bream...@gmail.com]

I'll second that, the wxpython lists have been suffering similar abuse for several days.

Kindest regards.

Mark Lawrence.

[Rasputin]

will you ever post a single .py file which actually works ?

all the stuff you post is breaking.

[Rasputin]

C. Angelico and Mark Lawrence,


who the fuck does this twin-scum think they are ?

you better stfu right now.


these guys are responsible for turning the pythonWiki into a pile of
rubbish.

fuck off and never return !








bream...@gmail.com:

[bream...@gmail.com]

On Friday, June 30, 2017 at 1:45:00 PM UTC+1, Rasputin wrote:
> C. Angelico and Mark Lawrence,
>
> who the fuck does this twin-scum think they are ?
>
> you better stfu right now.
>
> these guys are responsible for turning the pythonWiki into a pile of
> rubbish.

pythonWiki???

>
> fuck off and never return !
>

One strike and you're out.

*plonk*

Mark Lawrence

[D'Arcy Cain]

On 06/30/17 08:44, Rasputin wrote:
> fuck off and never return !

Chill dude. Haven't you ever heard of a killfile? You just earned a
place in mine.

--
D'Arcy J.M. Cain
Vybe Networks Inc.
http://www.VybeNetworks.com/
IM:da...@Vex.Net VoIP: sip:da...@VybeNetworks.com

[Rasputin]

LOL

[Rasputin]

bream...@gmail.com:

> pythonWiki???
>
>>
>> fuck off and never return !
>>
>
> One strike and you're out.
>
> *plonk*
>
> Mark Lawrence

read up about all those criminals of newsgroup "comp.python.pydotorg-www"
right here:

https://practical-scheme.net/wiliki/wiliki.cgi?SandBox

[Andre Müller]

Just don't read it. Calm down.

[Nikolaus Wirth]

>> One strike and you're out.

>> Mark Lawrence


Can you formally prove that?

[Mark Lawrence]

Rasputin:
> LOL


shocking ! this guy wants to undermine our position of power to rule
over the posting scum !

we must punish all users !