[issue39054] Add an parameter to list.remove()

[Lovi]

New submission from Lovi <1668151...@qq.com>:

I think the list can add a parameter to remove():

remove(value, appear_time=1, /)

The parameter appear_time indicates the number of times the value appears in 
the list.


I want this effect:

>>> list1 = [1, 2, 3, 2, 1, 2, 1]
>>> list1.remove(2, 2)
>>> list1
[1, 2, 3, 1, 2, 1]
>>> list1.remove(1, 3)
>>> list1
[1, 2, 3, 1, 2]

--
messages: 358420
nosy: lovi
priority: normal
severity: normal
status: open
title: Add an parameter to list.remove()
type: enhancement
versions: Python 3.8

___
Python tracker 
<https://bugs.python.org/issue39054>
___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue39046] collections.abc.Reversible should not be a subclass of Hashable

[Lovi]

Change by Lovi <1668151...@qq.com>:


--
nosy: +lovi
versions:  -Python 3.7, Python 3.8

___
Python tracker 
<https://bugs.python.org/issue39046>
___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue39045] Segmentation of string

[Lovi]

New submission from Lovi <1668151...@qq.com>:

I thought for a long time. I think it's necessary to add a segment method to 
str type or string module. This method is used to split a string into m parts 
and return all cases.

For example:

segment('1234', m=3) -> [('1', '2', '34'), ('1', '23', '4'), ('12', '3', '4')]
segment('12345', m=3) -> [('1', '2', '345'), ('1', '23', '45'), ('1', '234', 
'5'), ('12', '3', '45'), ('12', '34', '5'), ('123', '4', '5')]


I hope this proposal can be adopted.

--
components: Library (Lib)
messages: 358383
nosy: lovi
priority: normal
severity: normal
status: open
title: Segmentation of string
type: enhancement
versions: Python 3.8

___
Python tracker 
<https://bugs.python.org/issue39045>
___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue39043] Add math.fib() generator

[Lovi]

New submission from Lovi <1668151...@qq.com>:

I think it's appropriate to add the generator fib() to the math module. With 
fib(), some operations will be easier.

The generator is like this:

def fib(count=None):
if count is not None and not isinstance(count, int):
raise ValueError(f"Parameter count has an unexpected type: 
{count.__class__.__name__}.")
a, b = 0, 1
while True:
a, b = b, a + b
if count is not None:
if not count:
return
count -= 1
yield a

--
components: Library (Lib)
messages: 358375
nosy: lovi
priority: normal
severity: normal
status: open
title: Add math.fib() generator
type: enhancement
versions: Python 3.9

___
Python tracker 
<https://bugs.python.org/issue39043>
___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue39036] Add center_char attribute to str type

[Lovi]

Lovi <1668151...@qq.com> added the comment:

Sorry, I made a mistake.

The center char of '12345' is '3' and the center char of 'abcd' is '' because 
it doesn't have the most central character.

In my opinion, with center_char, when you need the center character of a string 
you can get it directly with str.center_char instead of tedious index and 
calculation.

--

___
Python tracker 
<https://bugs.python.org/issue39036>
___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue39036] Add center_char attribute to str type

[Lovi]

New submission from Lovi <1668151...@qq.com>:

I think Python3.9 needs to add the center_char attribute which means the center 
character of strings to string type, such as the center_char of '12345' is '1' 
and the center_char of 'abcd' is 'bc'.

--
components: Windows
messages: 358328
nosy: lovi, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: Add center_char attribute to str type
type: enhancement
versions: Python 3.9

___
Python tracker 
<https://bugs.python.org/issue39036>
___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com