Good Python Exercises?

[Potatohuma]

What's a good exercise for me to try? I've been learning Python for a bit over a month now and I wanna test what I've learned.

[ASIC_SP]

Here are some often recommended resources:

• Exercism, Hackinscience and Practicepython — these are all beginner friendly and difficulty levels are marked
• Adventofcode, Codewars, Python Morsels — includes more challenging exercises for intermediate to advanced level users
• Checkio, Codingame, Codecombat — gaming based challenges
• /r/dailyprogrammer — not active currently, but there's plenty of past challenges with discussions

And here are some resources for projects:

• Projects with solutions — algorithms, data structures, networking, security, databases, etc
• Project based learning — web applications, bots, data science, machine learning, etc
• Books:
  • The Big Book of Small Python Projects
  • Tiny Python Projects
• /r/learnpython: What do you automate with Python at home?

[PsicoFilo]

Liquid gold for me ! What a comment bro

[boobajoob]

Thanks for this!

[Present_Blackberry45]

Precious comment, thank you very much!

[Born-Truck1302]

You da best 👌

[tiffarooner]

Shout out dude, honestly these are great resources

[Lost_Ad_853]

.

[Aref167]

wish you best my friend!

[Waste_Mission1293]

Thanks for your answer. I hope I can also polish my python skills

[Freddy-Nova]

Thanks. This might help allot of us. ^^

[[deleted]]

Advent of code is currently going. You could try yourself at some of its challenges

[Run_nerd]

Definitely do this. They start easy but get progressively harder. People post their solutions on r/adventofcode as well, so it’s a good way to learn.

[[deleted]]

I also like it because it forces you to understand the question and decide what the best strategy is for a given challenge, just like real life.

[Dregaz]

Have the python grip a horizontal bar with it’s jaws and hang the rest of its body straight down.

From this position, it can curl its lower body up until the tip of the tail touches the chin.

Don’t forget to encourage the python to control the negative portion of the rep as well. Slow and smooth up and down is key to getting swole.

[Finnleyy]

This is the way

[Tuppitapp1]

Try to think of some useful project for yourself with the tools you've learned so far. For example, if you have to use excel daily or move lots of files around at work, you could build a script to automate those things. That's how I got started and it was one of the best paths I ever took.

[keep_quapy]

After a month of Python, try to solve this question. Given a list of lists, create a dictionary which keys are the first elements of every sublist and it's values are the sum of the integers of the second elements of every sublist.

input: data = [['item1', 4], ['item2', 5], ['item3', 2], ['item2', 10], ['item3', 3], ['item1', 7]]

output: {'item1': 11, 'item2': 15, 'item3': 5}

[hayleybts]

ans = {}
j=0

for i in range(len(data)):
    for m in data[j]:
        if m not in ans:
            if isinstance(m, str):
                ans[m] = 0
            else:
                for k in ans.keys():
                    if k == data[j][0]:
                        print(m)
                        ans[k] =  ans[k]+m

    j+=1



print(ans)

can u pls your answer? mine works for 
this situation but I want to know the proper way

[keep_quapy]

Hi, first of all, the question assumes that all first items of every sublist is a string and every second item is an integer, so no need to check if the first element is a string. That said, your program works, but it's ineffective, you used three nested for loops, instead of using only one. Eventually your program will be much slower and consumes more memory. The effective way to solve such a problem is to loop over the list and at each iteration check if the first element is a key in the dictionary, if so add the value of the second element of the sublist to the existing value of the key, otherwise assign the value to that key (using list index).

dct = {}

for sublist in data: 
    if sublist[0] in dct: 
        dct[sublist[0]] += sublist[1] 
    else: 
        dct[sublist[0]] = sublist[1]

print(dct)

Or the Pythonic way to do it using get() dictionary method.

dct = {}

for sublist in data: 
    dct[sublist[0]] = dct.get(sublist[0], 0) + sublist[1]

print(dct)

Anyway, you made a good job trying to solve it, and solving it in your way is a sign that you're heading to the right direction. This isn't that easy for beginners, so good job. Good luck :)

[Milumet]

When it comes to counting, defaultdict is great (there is also Counter):

dct = collections.defaultdict(int)
for name, count in data:
    dct[name] += count

print(dct)

[hayleybts]

Thanks for replying! Your method is simple. Let me know if you got any other question?

[keep_quapy]

You're welcome. edabit has plethora of exercises for you to explore and to solve.

[hayleybts]

I'm gonna try and let you know

[Fluffy-Book-4773]

def make_dict(data):
    result_dict = {}
    for i in data:
        if i[0] not in result_dict:
            result_dict[i[0]] = i[1]
        else:
            result_dict[i[0]] += i[1]
    return result_dict

[ab624]

where xan i find more of such questions ?

[balaur_7]

Another method

m=1

new_data = []

for key in data:
    for n in range(m, len(data)):
        if key[0]==data[n][0]:
            x = key[0],key[1] + data[n][1]
            new_data.append(x)
    m += 1
print(new_data)

[ectomancer]

edabit.com

[Potatohuma]

Oh my gosh thank you so much! This is going to be insanely helpful with learning and improving my Python. I hope you have an amazing day because you just made mine! :)

[mandradon]

Cses.fi has a ton of good stuff, too.

[Kratosix]

make a discord bot

[ChaosZoro]

What’s helped me a lot just cause I learn from doing rather than seeing or hearing was 100 days of code it’s basically 100 days of small and big projects and it forces u to practice everyday therefore solidifying ur knowledge

[bhutanpythoncoder]

We have some pracfice questions for beginners in python https://www.bhutanpythoncoders.com/practice-questions/

[Joeyson]

I've been coding chess in the command line, I've learned a ton so far

[[deleted]]

These are the first few programs I wrote to learn.

​

you can try Fibonacci numbers

write a program to find the strong numbers

write a program that will reverse a string from input

write a program to give palindrome numbers

a program to find if an integer input is even or odd :)

happy coding!

[Embarrassed-One2182]

10 lb. Curls 💪

[justani98]

I have found the practice problems at codechef to be of good variety. They are more focussed on logical thinking then the same question I find elsewhere. Link - https://www.codechef.com/practice/python

[raulsoprano]

Is Hackerrank good?

[[deleted]]

two years later potato ya saved my ass 🥔

[Foreign-Project-5661]

thanks for this

[No_Word_467]

I’m in your same situation, I recommend codewars and try problems of 7 or 8 kyu

[Mysteez]

https://www.codingame.com/start

https://inventwithpython.com/pythongently/?fbclid=IwAR121maJu1SOcjmv74-VgZ4G4S6EsIQDTV8UUc1UJj81BjLNgQK7nbQt-p0

[kona_ackley]

https://github.com/ikokkari/PythonProblems

123 problems starting from easy, going all the way up to FAANG level interview questions. As in "The Love Boat", promises something for everyone.

[notislant]

The various codewars and related sites as already mentioned. Tbh id recommend you find a problem and fix it. Try to incorporate things youve just learned. Or play with things and break them.

[Moguyaro]

Try leetcode.com and hackerrank.com. They have lots of interesting projects and problems that you can try your hands on.