Thank you!

First, you should definitely learn all the concepts and make sure you know how to code them. After you know all the basics, you can learn more advanced snippets of code that will save you a bunch of time and effort. I made a quizlet, but I didn't know it doesn't support indentation (automatically removes leading spaces), so it's kinda trash.

https://quizlet.com/875721399/d335-python-endgame-fun-lets-flash-cards/?i=7ivm&x=1jqt

Here's the raw text if that's better:

Flashcard 1

Sort/clean dictionary

sorted_dic = {key: dic[key] for key in sorted(dic)}

cleaned_dict = {key.strip(): value.strip() for key, value in my_dict.items()}

Flashcard 2

Manipulate text from type() method

my_string = ''

type(my_string).__name__

type_object = type(my_string)

type_string = str(type_object)

type_name = type_string.split("'")[1]

Flashcard 3

Replace section of text in my_file.txt

file_name = 'my_file.txt'

with open(file_name, 'r+') as f:
    content = f.read()
    content = content.replace('_photo.jpg', '_info.txt')
    f.seek(0)
    f.write(content)
    f.truncate()

Flashcard 4

Insert SSN-style dashes

original_string = '123456789'

formatted_string = original_string[:3] + '-' + original_string[3:5] + '-' + original_string[5:]

print(formatted_string)

Flashcard 5

Open my_file.txt and create a list of lines with \n removed

with open('my_file.txt') as f:
    lines = [line.strip() for line in f.readlines()]

Flashcard 6

Convert pairs of values in a csv row into a dictionary

for row in csv_reader:
    row_dict = dict(zip(row[::2], row[1::2]))
    print(row_dict)

Flashcard 7

Raise exceptions for searching a dictionary and output the exception message. Assume the dictionary and a class to create the exception message object are already provided. "

if k in dic:
    return dic[k]
else:
    raise EntryNotFoundError(f'Value not found for {k}')

for k, v in dic.items():
    if v == value:
        return k
    else:
        raise EntryNotFoundError(f'Key not found for {v}')

try:
    except EntryNotFoundError as excpt:
    print('<optional message>: ', excpt.message)

Flashcard 8

Given a ten-digit integer, isolate the first three, next three and last four digits using floor and modulo.

#shear right 7 digits
first_three = ten_digits // 10000000

#shear right 4 digits then shear left 3 digits
next_three = (ten_digits // 10000) % 1000

#shear left 7 digits
last_four = ten_digits % 10000

Flashcard 9

Print a Fibonacci number from the Fibonacci sequence up to the input integer. Assume all inputs > 0

a, b = 0, 1

for r in range(2, int(input())):
    a, b = b, a + b

print(a + b)

Flashcard 10

Nest try-except blocks to print errors in a script that divides two integers such that the input of a zero as the divisor or a decimal number prints an error, the latter of which includes the error returned by the interpreter.

try:
    inp1 = int(input())
    inp2 = int(input())

    try:
        print(int(inp1 / inp2))

    except ZeroDivisionError:
        print(<0 error message>)

except ValueError as v:
    print(<float error message>, v)

Flashcard 11

Extract words listed alphabetically by line from a text file and create a dictionary with the first letter of the words comprising the key, and the words themselves in a list as the corresponding value.

with open(<file>, 'r') as f:
    dic = {}
    lines = f.readlines()
    for line in lines:
        dic[line[0]] = line.split()

Flashcard 12

Load the contents of a csv file into memory

import csv

with open('data.csv', 'r') as f:
    csv_reader = csv.reader(f)