On 1/22/23 11:44, Stefan Ram wrote:
> Jach Feng writes:
>> e:\Works\Python>py infix2postfix.py "-4^2+5.3*abs(-2-1)/2"
>
> Well, it's a nice exercise! But I only made it work for the
> specific example given. I have not tested whether it always
> works.
Haha. Yes a nice exercise, but has n
On 21Jan2023 19:11, Jach Feng wrote:
Fail on command line,
e:\Works\Python>py infix2postfix.py "-4^2+5.3*abs(-2-1)/2"
usage: infix2postfix.py [-h] [infix]
infix2postfix.py: error: unrecognized arguments: -4^2+5.3*abs(-2-1)/2
The usual convention for having "nonoption" arguments beginning with
Argparse is for parsing command line arguments and options.
If you just want to evaluate an Python expression, use eval( )
Your string isn’t valid Python due to order of operations, but
-(4^2)+5.3*abs(-2-1)/2 is.
From: Python-list on
behalf of Jach Feng
Date: Sunday, January 22, 2023 at 11:2
On 1/21/2023 10:03 AM, Dino wrote:
I have a question that is a bit of a shot in the dark. I have this nice
bash utility installed:
$ tree -d unit/
unit/
├── mocks
├── plugins
│ ├── ast
│ ├── editor
│ ├── editor-autosuggest
│ ├── editor-metadata
│ ├── json-schema-validator
│ │ └─
On 1/22/2023 10:45 AM, Peter J. Holzer wrote:
Notice that this file is in its first release, version 0.0.1 - the metadata
that says it's 'Development Status :: 5 - Production/Stable' seems to be
bogus. So it may very well be buggy.
It is at least too incomplete to be useful. It handles only sin
Jach Feng wrote:
Fail on command line,
e:\Works\Python>py infix2postfix.py "-4^2+5.3*abs(-2-1)/2"
usage: infix2postfix.py [-h] [infix]
infix2postfix.py: error: unrecognized arguments: -4^2+5.3*abs(-2-1)/2
Also fail in REPL,
e:\Works\Python>py
Python 3.8.8 (tags/v3.8.8:024d805, Feb 19 2021, 13:
Thomas Passin 在 2023年1月22日 星期日下午1:30:39 [UTC+8] 的信中寫道：
> On 1/21/2023 10:11 PM, Jach Feng wrote:
> > Fail on command line,
> >
> > e:\Works\Python>py infix2postfix.py "-4^2+5.3*abs(-2-1)/2"
> > usage: infix2postfix.py [-h] [infix]
> > infix2postfix.py: error: unrecognized arguments: -4^2+5.3*a
On 2023-01-22 00:30:07 -0500, Thomas Passin wrote:
> On 1/21/2023 10:11 PM, Jach Feng wrote:
> > e:\Works\Python>py infix2postfix.py "-4^2+5.3*abs(-2-1)/2"
> > usage: infix2postfix.py [-h] [infix]
> > infix2postfix.py: error: unrecognized arguments: -4^2+5.3*abs(-2-1)/2
[...]
> > > > > import argpa
