def Lisprint(x): print( ' (' + ', '.join(x) + ')' , '\n')

a= ' a b c ? def f x if zero? x 0 1 '
a += ' A B C ! just an example '
x= a.split()

print(x)
Lisprint(x)

['a', 'b', 'c', '?', 'def', 'f', 'x', 'if', 'zero?', 'x', '0', '1', 'A', 'B', 'C', '!', 'just', 'an', 'example']

(a, b, c, ?, def, f, x, if, zero?, x, 0, 1, A, B, C, !, just, an, example)

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On Saturday, February 25, 2023 at 11:45:12 PM UTC-8, Hen Hanna wrote:

def Lisprint(x): print( ' (' + ', '.join(x) + ')' , '\n')

a= ' a b c ? def f x if zero? x 0 1 '
a += ' A B C ! just an example '
x= a.split()

print(x)
Lisprint(x)

['a', 'b', 'c', '?', 'def', 'f', 'x', 'if', 'zero?', 'x', '0', '1', 'A', 'B', 'C', '!', 'just', 'an', 'example']

(a, b, c, ?, def, f, x, if, zero?, x, 0, 1, A, B, C, !, just, an, example)

For nested lists.... impossible to improve upon P.Norvig's code


def Lisprint(x): print(lispstr(x))

def lispstr(exp):
"Convert a Python object back into a Lisp-readable string."
if isinstance(exp, list):
return '(' + ' '.join(map(lispstr, exp)) + ')'
else:
return str(exp)

a= ' a b c '
x= a.split()
x += [['a', 'b', 'c']]
x += x

print(x)
Lisprint(x)

['a', 'b', 'c', ['a', 'b', 'c'], 'a', 'b', 'c', ['a', 'b', 'c']]

(a b c (a b c) a b c (a b c))


---------- Without the commas, the visual difference (concision) is striking !

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

I so rarely need to save a list in python in a form acceptable to LISP but here is a go with no visible recursion needed.

nested = [1, 2, [3, 4, [5, 6, 7], 8], 9]

print(nested)

[1, 2, [3, 4, [5, 6, 7], 8], 9]

# Just converting to a tuple does not change nested lists

print(tuple(nested))

(1, 2, [3, 4, [5, 6, 7], 8], 9)

# But a function that typographically replaces [] with () needs no recursion >>> def p2b(nested_list): return repr(nested_list).replace('[','(').replace(']',')')

print(p2b(nested))

(1, 2, (3, 4, (5, 6, 7), 8), 9)

People who speak python well do not necessarily lisp.

-----Original Message-----
From: Python-list <python-list-bounces+avi.e.gross=gmail.com@python.org> On Behalf Of Hen Hanna
Sent: Sunday, February 26, 2023 4:54 AM
To: python-list@python.org
Subject: Re: one Liner: Lisprint(x) --> (a, b, c) instead of ['a', 'b', 'c']

On Saturday, February 25, 2023 at 11:45:12 PM UTC-8, Hen Hanna wrote:

def Lisprint(x): print( ' (' + ', '.join(x) + ')' , '\n')

a= ' a b c ? def f x if zero? x 0 1 '
a += ' A B C ! just an example '
x= a.split()

print(x)
Lisprint(x)

['a', 'b', 'c', '?', 'def', 'f', 'x', 'if', 'zero?', 'x', '0', '1', 'A', 'B', 'C', '!', 'just', 'an', 'example']

(a, b, c, ?, def, f, x, if, zero?, x, 0, 1, A, B, C, !, just, an, example)

For nested lists.... impossible to improve upon P.Norvig's code


def Lisprint(x): print(lispstr(x))

def lispstr(exp):
"Convert a Python object back into a Lisp-readable string."
if isinstance(exp, list):
return '(' + ' '.join(map(lispstr, exp)) + ')'
else:
return str(exp)

a= ' a b c '
x= a.split()
x += [['a', 'b', 'c']]
x += x

print(x)
Lisprint(x)

['a', 'b', 'c', ['a', 'b', 'c'], 'a', 'b', 'c', ['a', 'b', 'c']]

(a b c (a b c) a b c (a b c))


---------- Without the commas, the visual difference (concision) is striking !
--
https://mail.python.org/mailman/listinfo/python-list

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On Sunday, February 26, 2023 at 7:06:00 PM UTC-8, avi.e...@gmail.com wrote:

I so rarely need to save a list in python in a form acceptable to LISP but here is a go with no visible recursion needed.

nested = [1, 2, [3, 4, [5, 6, 7], 8], 9]

print(nested)

[1, 2, [3, 4, [5, 6, 7], 8], 9]

# Just converting to a tuple does not change nested lists

print(tuple(nested))

(1, 2, [3, 4, [5, 6, 7], 8], 9)

# But a function that typographically replaces [] with () needs no recursion >>> def p2b(nested_list): return repr(nested_list).replace('[','(').replace(']',')')

print(p2b(nested))

(1, 2, (3, 4, (5, 6, 7), 8), 9)

People who speak python well do not necessarily lisp.
-----Original Message-----
From: Python-list <python-list-bounces+avi.e.gross=gmai...@python.org> On Behalf Of Hen Hanna
Sent: Sunday, February 26, 2023 4:54 AM
To: pytho...@python.org
Subject: Re: one Liner: Lisprint(x) --> (a, b, c) instead of ['a', 'b', 'c']

On Saturday, February 25, 2023 at 11:45:12 PM UTC-8, Hen Hanna wrote:

def Lisprint(x): print( ' (' + ', '.join(x) + ')' , '\n')

a= ' a b c ? def f x if zero? x 0 1 '
a += ' A B C ! just an example '
x= a.split()

print(x)
Lisprint(x)

['a', 'b', 'c', '?', 'def', 'f', 'x', 'if', 'zero?', 'x', '0', '1', 'A', 'B', 'C', '!', 'just', 'an', 'example']

(a, b, c, ?, def, f, x, if, zero?, x, 0, 1, A, B, C, !, just, an, example)

For nested lists.... impossible to improve upon P.Norvig's code

def Lisprint(x): print(lispstr(x))

def lispstr(exp):
"Convert a Python object back into a Lisp-readable string."
if isinstance(exp, list):
return '(' + ' '.join(map(lispstr, exp)) + ')'
else:
return str(exp)

a= ' a b c '
x= a.split()
x += [['a', 'b', 'c']]
x += x

print(x)
Lisprint(x)

['a', 'b', 'c', ['a', 'b', 'c'], 'a', 'b', 'c', ['a', 'b', 'c']]

(a b c (a b c) a b c (a b c))

---------- Without the commas, the visual difference (concision) is striking !
--

https://mail.python.org/mailman/listinfo/python-list

is it poss. to peek at the Python-list's messages without joining ?



nice idea (approach)...


but maybe when it's revised to handle ['a', 'b', 'c', ['a', 'b', 'c'], 'a', 'b', 'c', ['a', 'b', 'c']] etc.
it'll converge to P.Norvig's code.

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On 28/02/23 4:24 pm, Hen Hanna wrote:

is it poss. to peek at the Python-list's messages without joining ?

It's mirrored to the comp.lang.python usenet group, or
you can read it through gmane with a news client.

--
Greg

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)