dutc

How do you tell if a key/value pair exists in a Python dictionary?

Here are a couple of choices, from reasonable (i) to pointless (ii) to potentially incorrect (iii) to absurd (iv) ~ (ix).

d = {}
k = object()

# i.

dutc

Reading symbols from python3...
Breakpoint 1 (-function malloc) pending.
Breakpoint 2 (-function tuple_alloc) pending.
Breakpoint 3 (-function npy_alloc_cache) pending.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7ffff43a8640 (LWP 96530)]
[New Thread 0x7ffff3ba7640 (LWP 96531)]
[New Thread 0x7fffe33a6640 (LWP 96532)]
[New Thread 0x7fffdaba5640 (LWP 96533)]

dutc

id(xs) = 0x7f9b_5e1a_82b0	xs.__array_interface__["data"][0] = 0x556b_581f_c4d0	id(t) = 0x7f9b_5e28_a580	args.size = 1
id(xs) = 0x7f05_d486_14e0	xs.__array_interface__["data"][0] = 0x55e1_12fa_a4d0	id(t) = 0x7f05_d495_1580	args.size = 1
id(xs) = 0x7f1d_574f_f8f0	xs.__array_interface__["data"][0] = 0x55c8_86a5_24d0	id(t) = 0x7f1d_58a7_1580	args.size = 1
id(xs) = 0x7f10_58e9_e300	xs.__array_interface__["data"][0] = 0x55ee_d01f_d4d0	id(t) = 0x7f10_58f8_0580	args.size = 1
id(xs) = 0x7fb4_ddb3_0260	xs.__array_interface__["data"][0] = 0x5653_496d_64d0	id(t) = 0x7fb4_ddc1_1580	args.size = 1
id(xs) = 0x7f68_602d_5530	xs.__array_interface__["data"][0] = 0x55b7_215a_f4d0	id(t) = 0x7f68_603c_7580	args.size = 1
id(xs) = 0x7f1d_b0f8_2300	xs.__array_interface__["data"][0] = 0x558a_0542_d4d0	id(t) = 0x7f1d_b106_4580	args.size = 1
id(xs) = 0x7f90_51dd_5260	xs.__array_interface__["data"][0] = 0x557b_cef8_d4d0	id(t) = 0x7f90_51eb_6580	args.size = 1
id(xs) = 0x7f9c_fb91_2850	xs.__array_interface__["data"][0] = 0x5580_e397_94d0	i

dutc

#!/usr/bin/env python3

from matplotlib.pyplot import show
from pandas import read_csv, to_numeric, DataFrame
from collections import namedtuple

class Analysis(namedtuple('Analysis', 'raw df')):
    TUP_PATTERN = r'id\(t\) = (?P<addr>0x[\da-z_]+)'
    NDARR_PATTERN = r'xs.__array_interface__\["data"\]\[0\] = (?P<addr>0x[\da-z_]+)'
    @classmethod

dutc

(require 'package)
(package-initialize)

(add-to-list 'package-archives
             '("melpa" . "https://melpa.org/packages/"))
; (add-to-list 'package-archives
;              '("elpy" . "https://jorgenschaefer.github.io/packages/"))
; (add-to-list 'load-path "~/.emacs.d/site-lisp/magit/lisp")
; (add-to-list 'load-path "~/.emacs.d/site-lisp/mdboom_gh")
(add-to-list 'load-path "~/.emacs.d/site-lisp/ox-rst")

dutc

#!/usr/bin/env python3

from networkx import DiGraph
from networkx.drawing.nx_pydot import to_pydot
from contextlib import contextmanager
from sys import setprofile
from collections import namedtuple

class Ident(namedtuple('IdentBase', 'filename lineno name')):
    def __str__(self):

dutc

#!/usr/bin/env python3

from nwis import dwim

@dwim
def func(x, y):
    return x @ y

if __name__ == '__main__':
    print(f'func(1, 2) = {func(1, 2)}')

dutc

.PHONY: test clean

test:
	seq 1 10 > seq1
	seq 10 20 > seq2
	mkdir -p dir
	seq 20 30 > dir/seq3
	python git-init+add+commit.py seq1 seq2 dir/seq3 || (git init . ; git add seq1 seq2 dir ; git commit -am 'first commit')
	git status
	git log

dutc

from __future__ import annotations
from inspect import signature
from functools import wraps
from collections import namedtuple

opt = namedtuple('Optional', '')()
def better_defaults(f):
    sig = signature(f)
    @wraps(f)
    def func(*args, **kwargs):

dutc

from numpy.random import random
from numpy import array, isclose, zeros_like, sign
from numpy.linalg import lstsq

def solve(func, values, atol=0.1):
    while True:
        result = func(values)
        if isclose(result, 0, atol=atol):
            break
        values -= sign(result) * random(values.size)