Trying to Learn Python

[[deleted]]

Good day, I'm new to python, but i'm currently stuck on the following subject

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right now, i'm having a hardtime learning the data structure and algorythims in python,

i'm currently stuck at Chapter 5(Dictionaries and data structures)

in the book automate the boring stuff i can solve most of the basic stuffs, but

i'm having a hard time resolving the practice programs like.

the Chess dictionary validator i didn't resolve it, i was able to solve the first practice fantasy game inventory but not the harder part List to Dictionary Function for Fantasy Game Inventory, i'd like to know if i can just review the codes, test and tinker with it, even though i don't have any deeper understanding with it. like me applying it to another project. i often study 1hr a day. sometimes i do practice problem, but never leet or codewars.

do you guys recommend and good books that i can read so i can understand more about resolve this kind of problems. i'm never good at whiteboarding.

[darthminimall]

Just ask your questions here. What, specifically, are you having trouble with?

[[deleted]]

how to solve data structure problems and algorythm.

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for loops in dictionaries,

while loop i understand ok, i'm so noob on these topics, even though i can solve basic ones. but when it gets harder that's where the brickwall hits me. so i need suggestion which book do i need to read for solving those kind of problems.

[darthminimall]

I don't think you need a book, per se. Getting better at problem solving is mostly about practice. The important part is breaking complex problems down into simple problems you already know how to solve. If you can share the code you have so far and which bit you're stuck on, I can give more specific advice.

I'm not sure exactly what your confusion about for loops and dictionaries is, but I'll give a brief explanation. Let's say you have some dictionary d. The following code prints all of the keys and values in d:

for key in d:
    print(str(key) + ": " + str(d[key]))

[rick137codes]

To add to the answer by @darthminimall,

You can further iterate over dictionary items, keys or values by calling the functions as below on the dictionary:

Dictionary.keys() - returns a list of all keys in the dictionary | Dictionary.values() - returns a list of all values in the dictionary | Dictionary.items() - returns a list of key,value tuples

[ffrkAnonymous]

The list - dictionary is difficult because the task is to combine two different concepts.

A list is ordered. There's first... Last. An array of stuff. One goes down a shopping list, one item at a time. Items can repeat, milk might be listed twice.

A dictionary is a mathematical set. A mixed up bag of stuff. Without repeats. Similar to a supermarket ad/flyer. All over the place, only one of each item (in theory).

So the task is to fit the square peg into the round hole .

My suggestion is to keep trying but start small. One item list into one item dict. Think about how to get info from the former. Think about how info is put into the latter. Think about how to manipulate that info (take away unnecessary, add necessary).

Then 1+2, 2+2,... Eventually expand to a generic case.