PyAnchorAlter, Python 3

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#python 3.6.9
#PyAnchorAlter
#this code is created by Rezaul Hoque on February 14,2022;
#contact:jewelmrh@yahoo.com;Dhaka,Bangladesh;https://rezaulhoque.wordpress.com,https://hoquestake.blogspot.com
#note: codes shared by Rezaul Hoque on rextester are not for sale; they are created and shared to facilitate the algorithm learning process; many like Hoque use this platform to practice programming ;Rezaul hopes his contribution helps others to fine tune their learning;
import re

a = 'We bought two tickets at Tk 300.50. We started our journey at 06:30. We made a brief stop at a roadside tea stall at 10:30 and took our breakfast there. We ate 2.5 pounds of cake and 1.5 dozens of orange. We resumed our journey 11:30. But the clock inside the bus showing 111:300. Finally we reached our destination at  17:59.'
pick = r'([01]\d|2[0-3]):[0-5]\d'

samples = re.finditer(pick, a)
for sample in samples:
    print(sample.group())
s='111:222'
f=r'\d\d\d$'
fractions=re.finditer(f,s)
for fraction in fractions:
    print(fraction.group())

[ + ] Show input
Absolute running time: 0.19 sec, cpu time: 0.05 sec, memory peak: 9 Mb, absolute service time: 0,29 sec