python-exercises | Series of exercises to learn Python | Math library
kandi X-RAY | python-exercises Summary
kandi X-RAY | python-exercises Summary
🤓 Series of exercises to learn Python
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python-exercises Examples and Code Snippets
Community Discussions
Trending Discussions on python-exercises
QUESTION
I know that Maxima CAS can rationalize floating point number ( convert to ratio):
...ANSWER
Answered 2020-Oct-11 at 06:39This is a translation of an algorithm from python:
QUESTION
I have a dataframe that looks like this:
...ANSWER
Answered 2020-Apr-11 at 14:37Let us create the range of datetime then , use explode
QUESTION
I am trying to create an array of zeros and three-column types (integer, float, character). Reference question
Doubt
Why dtype=S
here is creating a binary String?
ANSWER
Answered 2020-Mar-08 at 17:24Sometimes S
or str
is understood to mean, 'a long enough string to hold the values':
QUESTION
I was trying to see the difference in runtime for different sorting algorithms when I found that I was getting consistently faster runtime for one version of Insertion sort than another version of insertion sort. The versions of the algorithms seem nearly Identical (only a 1 off the difference). I am not sure why. One version (slower one) is from w3resource and the other one (faster one) is from geeksforgeeks. I am doing the comparison in python.
Geeks for Geeks
...ANSWER
Answered 2020-Feb-24 at 09:05The top one defines j once per outer loop. 10.000 times. In the bottom one you have to decrease j in every inner loop control for testing. That's (10.000 * 10.000 - 10.000)/2 as an upper limit (thanks to @trincot for correcting this) operations more.
Slower Version:
QUESTION
I have a table that has one column as day of birth and another as month of birth of students. I need to transform it into their zodiac signs.
I have found a function on the internet that transforms month and day of birth into zodiac signs, but it takes inputs. What if it's from two columns of a table?
...ANSWER
Answered 2019-Sep-03 at 02:27Instead of trying to work with the entire table in your function signo
, you can modify it to work on a single row of your DataFrame and then transform your entire dataset using apply
:
First let's create some sample data:
QUESTION
I am starting to learn Python and looked at following website: https://www.w3resource.com/python-exercises/string/ I work on #4 which is "Write a Python program to get a string from a given string where all occurrences of its first char have been changed to '$', except the first char itself."
...ANSWER
Answered 2019-May-31 at 12:51There are two issues, first, you are not starting iteration where you think you are:
QUESTION
What I'm trying to accomplish is: given two lists sorted in increasing order, create and return a merged list of all the elements in sorted order (merge-sort).
The code I have written is:
...ANSWER
Answered 2019-May-15 at 22:11Just change the order of what you had initially from:
QUESTION
Both program are of finding number of common divisors of two numbers.
INPUT:a=100000 b=100000
python 36 (correct)
cpp 35 (wrong)
First i find gcd of two numbers and then finding the factors of gcd to obtain common divisors. I find the python program from here and i tried to convert it into cpp but i am getting wrong answer.
python:
...ANSWER
Answered 2019-Feb-11 at 20:04Note this if
in Python:
QUESTION
I try to programming in Python a Script, which is generate automaticly a XML File whith some information in there.
So i am stuck on a Point. I have 6 subelements. The text of a subelement can be a 0 or a 1. I want print all possibility for the 6 Elements.
What I have:
...ANSWER
Answered 2018-Sep-19 at 08:31The most concise way to do this that I can think of would be to write a for
loop that iterates over all the numbers from 0
to 63
(2^6 - 1
) in binary as this would go from 000000
to 111111
. Then split each number into individual digits and put each digit within one of your tags.
Here's an example:
QUESTION
I am doing python exercises from 'w3resource'. The exercise is 'Write a Python function to find a distinct pair of numbers whose product is odd from a sequence of integer values.'.
The code is shown as followed. I don't understand the whole block of "if product & 1". The sign '&' seems set.intersection but not sure. Meanwhile, why do both 'return True' and 'return False' appear? Can anyone explain? Thanks.
...ANSWER
Answered 2018-Sep-05 at 05:29product & 1
means check whether product is odd, because the last digit of binary representation of an odd number always is 1 while for an even number is 0.
Seems like you don't really know the meaning of &. & is a bitwise operator. Here's how to calculate 5 & 9:
1) transform 5 to binary representation (5)10 = (101)2
2) transform 9 to binary representation (9)10 = (1001)2
3) for every binary digit, & with two 1 is 1 otherwise 0. So
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Install python-exercises
You can use python-exercises like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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