이론 정리

 

replit.com/

 

 

1. Data Types of Python

a_string = "like this" #str
a_number = 3 #int
a_float = 3.12 #float
a_boolean = False 
a_none = None  #존재하지 않음

 

 

2. Lists in Python (Mutable Sequence Types)

days = ["Mon","Tue","Wed","Thur","Fri"]

docs.python.org/3/library/stdtypes.html#sequence-types-list-tuple-range

Built-in Types — Python 3.9.4 documentation

 

3. Tuples and Dicts

days = ("Mon","Tue","Wed","Thur","Fri")

nico = {
  "name": "Nico",
  "age": 29,
  "korean": Ture,
  "fav_food": ["Kimchi","Sashimi"]
}

 

4. Creating a Your First Python Function

def say_hello():
  print("hello")

 

5. Function Arguments

def plus(a, b):
  print(a + b)

plus(2, 5)

 

6. Returns

def plus(a, b):
  return a + b

result = plus(2, 4)
print(result)

 

7. Keyworded Arguments

def plus(a, b):
  return a + b

result = plus(b=2, a=4)
print(result)


def say_hello(name, age):
  return f"Hello {name} you are {age} years old"

hello = say_hello(name="nico", age="12")
print(hello)

 

8. Conditionals part One

def plus(a, b):
  if type(b) is int or type(b) is float:
    return a + b
  else:
    return None
    
    
print(plus(12, 1.2))

 

9. if else and or 

def age_check(age):
  print(f"your are {age}")
  if age < 18:
    print("you cant drink")
  elif age == 18:
    print("you age new to this!")
  elif age > 20 and age < 25:
    print("you are still kind of young")
  else:
    print("enjoy your drink")


age_check(29)

 

10. for in

days = ("Mon", "Tue", "Wed", "Thu", "Fri")

for day in days:
  print(day)

days = ("Mon", "Tue", "Wed", "Thu", "Fri")

for day in days:
  if day is "Wed":
    break
  else:
    print(day)

 

11. Modules

import math

#올림하는 함수
print(math.ceil(1.2))

from math import ceil, fsum

print(ceil(1.2))
print(fsum([1, 2, 3, 4, 5, 6]))