Jan Pipek

@janpipek.bsky.social

89 Followers 214 Following

Physicist -> programmer / data scientist from Prague. Occasional hiker, trail runner & photographer. PyData Prague.

Žiarská dolina - a narrow footpath among mountain pines. Backlit.
Abstract square high-contrast image of snow + lichen + rocks.
Mumlavský vodopád
Two hornbeam branches with leaves and drops hanging. A silhouette of a trunk between them. B&W square photo.
Square photo of wet leaves against sky and blurry tree trunks.
Backlit BW photo of an elderly woman in the Old Town Square, Prague.
An abstract head-like shape formed from two different ice surface structures. Slightly tainted BW square photo.
Bubble in a frozen puddle, in a shape of thumbs-up.
from time import time big_number = int(1e9) def run_in_local_scope(): # Make the access to time faster (is it?) t = time # Measure the duration of both time(), range and dict calls start_time = t() end_time = {0: t() for _ in range(big_number - 1)} and t() duration_time = (end_time - start_time) / big_number # Measure the duration of the range and dict calls start_rest = t() end_rest = {0: None for _ in range(big_number - 1)} and t() duration_rest = (end_rest - start_rest) / big_number print(f"Duration of time + range + dict calls: {duration_time}") print(f"Duration of range and dict calls: {duration_rest}") print(f"Net difference: {duration_time - duration_rest}") return t run_in_local_scope()
Three frost-covered logs, coloured to green&red&blue with a New Year's wish inscribed.
Twig with frozen moisture against dark tree trunk. B&W square photo.
Snow with a small puddle in it. B&W square photo.
Two stones marking the CZ/PL boundary.