kurz.md

Kurz jazyka Python

Úvod

1. winget
2. Terminal
3. Python
4. VS Code

pip install ipykernel

Linky

• JetBrains Python prieskum
• VS Code Python doc
• C++ vs Python vs Java
• Stackoverflow survey

VS Code

• Doplnky
• Python profil
• Príkazová paleta
• Základné nastavenia
• Klávesové skratky
• Spúšťanie Python programov

Doplnky

• MS Python
• Jupyter

Všetky doplnky je možné naištalovať pomocou bublín vo VS Code transparentne bez toho, aby si to užívateľ uvedomil.

Roly

• Dátový inžinier (data engineer)
• Dátový vedec (data scientist)
• Dátový analytik (data analytic)

Základné programovacie postupy

• nemeniteľnosť (immutability)
• funkcionálne programovanie
• list comprehensions
• využitie record typov (data class v Pythone)
• využitie pattern matchingu

Zopakovanie základov

#!/usr/bin/python

# recapitulation
# recap.py

import random
import sys

# ******************************      
# os module

print(sys.version)

print("******************************") 

# ******************************      
# list, for loop, built-ins

nums = [1, 2, 3, 4, 5]

print("There are {0} elements in the list".format(len(nums)))

for e in nums:
    print(e, end=' ')
    
print()    

print("maximum: {0}".format(max(nums)))
print("maximum: {0}".format(max(nums)))
print("summation: {0}".format(sum(nums)))

# ******************************
# expressions, operators

x = 45
y = 12

z = x * y - 12
print(z)

print(12 / 4 * 3)


# ******************************
# booleans      

male = False
male = bool(random.randint(0, 1))

if male:
   print("We use name John")
else:
   print("We use name Victoria")
   
 
print("******************************") 

# ******************************      
# dictionary   

capitals = {}
capitals["svk"] = "Bratislava"
capitals["deu"] = "Berlin"
capitals["dnk"] = "Copenhagen"

print(capitals)


for k, v in capitals.items():
    print("key: {0}, value: {1}".format(k, v))

print("******************************")

# ******************************      
# while loop

i = len(nums) - 1
mysum = 0

while (i >= 0):
    
    mysum += nums[i]
    i -= 1
    

print("summation 2: {0}".format(mysum))

print("******************************")

# ******************************      
# introspection

ab = ()
print(type(ab))
print(dir(ab))
print(ab.__doc__)

print("******************************")

# ******************************      
# sets

set1 = { 'a', 'b', 'c', 'c', 'd' }
set2 = { 'a', 'b', 'x', 'y', 'z' }

print("Set 1:", set1)
print("Set 2:", set2)
print("intersection:", set1.intersection(set2))
print("union:", set1.union(set2))
print("difference:", set1.difference(set2))
print("symmetric difference:", set1.symmetric_difference(set2))