list(range(1, 10, 1))

range(1, 10, 1)

r = range(0, 20, 2)
r

r[5]

r[:5]

score = int(input('점수 입력: '))

if score >= 90:
    print('A')
elif score >= 80:
    print('B')
elif score >= 70:
    print('C') 
else:
    print('D')

colors = ['red', 'orange', 'black', 'blue']
for c in colors:
    print(c)

result = [90, 35, 68, 44, 81]

count = 1

for i in result:
    if i >= 60:
        print(count, '번 학생은 합격', sep='')
    else:
        print(count, '번 학생은 불합격', sep='')
    count+=1

result = [90, 35, 68, 44, 81]

for i in range(len(result)):
    if result[i] >= 60:
        print(i+1, '번 학생은 합격', sep='')
    else:
        print(i+1, '번 학생은 불합격', sep='')

result = [90, 35, 68, 44, 81]

for i, v in enumerate(result):
    if v >= 60:
        print(i+1, '번 학생은 합격', sep='')
    else:
        print(i+1, '번 학생은 불합격', sep='')

a = [10, 20]
a

a, b = [10, 20]
print(a, b)

mylist = [list('abc'), list('edf'), list('dkx')]
mylist

for i in mylist:
    for j in i:
        print(j)

mylist = [list('abc'), 1, tuple('ghi')]
mylist

for i in mylist: 
#     print (type(i))
    if type(i) == list: # 문자열이 섞였을 경우
        for j in i:
            print(j)
    else:
        print(i)

mylist = [list('abc'), 1, tuple('dkx')]
mylist

for i in mylist: 
    if type(i) in [list, tuple]:
        for j in i:
            print(j)
    else:
        print(i)

sum([1,2,3,4])

any([0,2,3,4]), all([0,2,3,4])

import numpy as np

arr = np.array([0,1,2,3,4,5])
arr

np.any(arr%2==0) #이런 용도 any 사용

a = [1,2,3,4]
b = []
for i in a:
    b.append(i%2==0)
b

c = (i for i in a if i%2==0)
c

def myfunc(x, y):
    return x+y

myfunc(10, 20)

def myfunc(x, y):
    c = x + y
    return 

print(myfunc(10, 20))

def myfunc(x, y):
    c = x + y   
    
print(myfunc(10, 20))

def myfunc(x, y):
    return x+y
    c = x+2*y
    return c  

myfunc(10, 20)

전역변수 = 10000

def func1(x, y):
    변수 = 1000
    return x+y+변수+전역변수

def func2(x, y):
    전역변수 = 100
    전역변수 += 10000
    return x-y-전역변수


print(func2(10, 20))
print(func1(10, 20))

요일 = '월'

if 요일 == '월':
    변수1 = '월요일'
else:
    변수1 = '화요일'

변수1

def myfunc(x, y):
    return x + y
    
myfunc(10, 10 , 20)

def myfunc(x, y, z=100, a=100):
    return x + y + z + a
    
myfunc(10, 10)

def myfunc(x, y, z=100, a=100):
    return x + y + z + a
    
myfunc(10, a=10000, y=100)

def mysum(x):
    ret = 0
    for i in x:
        ret+=i
    return ret
    
mysum([10, 10, 20, 30, 50])

def mysum(*x):
    ret = 0
    for i in x:
        ret+=i
    return ret
    
mysum(10, 10, 20, 30, 50)
mysum(*[10, 10, 20, 30, 50])

def mysum(a,b,c,d,e):
    return a+b+c+d+e
    
mysum(*[10, 10, 20, 30, 50])

a, b = [1,2]
b

def myadd(**a):
    print(a)
    
myadd(b=10, c=20)

def myadd(a, b):
    print(a, b)
    
myadd(**{'a':10, 'b':20})

def myadd(b, **a):
    print(b, a)
    
myadd(b=10, c=20)

def myadd(*a, **b):
    print(a)
    print(b)
    
myadd(c=10, d=20)

def myadd(*a, **b):
    print(a)
    print(b)
    
myadd(10,30, d=10, e=50)

def calc_many(choice, *args):
    ret = 0 if choice=='sum' else 1
    
    for i in args:
        ret = (ret+i) if choice=='sum' else (ret*i)
    return ret

print(calc_many('sum', 1,2,3,4))
print(calc_many('mul', 1,2,3,4))

def mysum(args):
    return sum(args)

def mymul(args):
    ret = 1
    for i in args:
        ret*=i
    return ret

def calc_many(choice, *args):
    func = {'sum': mysum, 'mul': mymul}[choice]
    return func(args)

print(calc_many('sum', 1,2,3,4))
print(calc_many('mul', 1,2,3,4))

a = calc_many
a('sum', 1,2,3,4)

a = calc_many('mul', 1,2,3,4)
a([1,2,3,4])

print('''hello
안녕하세요
python
파이썬''')

calc_many.__doc__

def func(a, /, b, *, c):
    print(a,b,c)
    
func(10, 20, c=30)

func(10, b=20, c=30)

func(a=10, b=20, c=30) # positional only를 키워드로 전달

func(10, 20, 30) # 키워드 only를 positional로 전달

dir(__builtins__)

a = 511
b = 511

a == b

a is b

id(a), id(b)

a = 100
b = 100

a == b

a is b

id(a), id(b)

a = -6
b = -6

a is b

a= [1,2,3]
b= [1,2,3]

a is b

a = 'abcd'
b = 'abcd'

a is b

a is b

list(enumerate('abcd', start=0))

enumerate('abcd', start=0)

for i, v in enumerate('abcd'):
    print(i, v)

for i, (v1,v2,v3) in enumerate([[1,2,3], [4,5,6]]):
    print(i, v1, v2, v3)

list(map(int, '123'))

[int(i) for i in '123']

list(map(lambda x: x%2==0 , [1,2,3,4,5,6]))

[i%2==0 for i in [1,2,3,4,5,6]]

list(filter(lambda x: x%2==0 , [1,2,3,4,5,6]))

[i for i in [1,2,3,4,5,6] if i%2==0]

list(map(lambda x: x-1 , [1,2,3,4,5,6]))

list(filter(lambda x: x-1 , [1,2,3,4,5,6]))

arr2 is arr

arr2

arr

arr[0] = 1000
arr

arr2

a = 511
print(id(a))
a += 1
print(id(a))

a = (1,2)
a

a[0] = 10

a = ([1,2],2)
a

a[0][1] = 10
a

a = list('abc')
b = list('123')
c = list('*/1')

list(zip(a,b,c))

for i in zip(a,b,c):
    print(i[0], i[1], i[2])

for i, j , k in zip(a,b,c):
    print(i, j, k)

for i in range(len(a)):
    print(a[i], b[i], c[i])

%%time
count = 0
for i in range(10000000):
    count+=i
count

a=3
b='python'
c=[1,2,3]
a,b,c

type(b)

i=20
i

i=0b1001
i

i=0o11
i

i=0x011
i

f = 1.0
f

c = 2+3j
c

# 오류
8a=10

# 한글 변수
변수 = 20
변수

a = 77
type(77), type(a)

type(True)

int(True)

float(77)

int(3.14)

bool(0)

bool(1), bool(100), bool(-1)

7%3

7/4

7//4

int(True), int(False)

bool(None), bool(False), bool(0), bool(0.0), bool(0j), bool(""), bool([]), bool(()), bool({})

bool(1), bool(3.14), bool('A'), bool([1, 2])

A = 300
B = 300

A == B

A = 300
B = 300

A != B

A = 300
B = 300

A is B

A = 127
B = 127
A is B

id(A), id(B)

type(10) is int 

a = 10
b = 20
c = 31

a < b and a%2==0 and a == c

a < b

a%2==0

True and True, True and False

True or True, True or False

not True, not False

# "Python" 의 type은 무엇인가?
type('Python')

'hello jaen'

'Python is Easy'

"""Hello JA, JA is a Big Company""" 

myStr4 = """Hello JA, JA is a Big Company
Hi Jerry"""
print(myStr4)

mystr5 ='Hello JA, JA is a Big Company\nHi Jerry'
print(mystr5)

mystr6 = 'a\tb'
print(mystr6)

A = 'Py'
B = 'thon'
c= A+B
c

A = 'Python'
B = A*3
B

myStr = "python"
myStr[0]

myStr[5]

myStr[-1]

myStr[1:4]

myStr[1:], myStr[1:6], myStr[-5:]

myStr[:4]

myStr[::2]

myStr[::-1]

# 다음을 인덱싱하여 성별을 나타내는 숫자를 출력하세요.
pin = "881120-1064533"
# code here

pin[7], pin[-7]

# 다음을 슬라이싱하여 날짜는 date 변수에 날씨는 weather 변수에 저장 후 출력하세요
msg = "20180522Rainy"
# code here

date = msg[:8]
weather = msg[8:]
date, weather

x = 100
'x is %d' %x

cnt = 'five'
'I eat %s apples.' %cnt

A = 3
B = 7
'%d + %d = %d'%(A, B, A+B)

A = 3.141592
'%0.2f' % A

import time

now = time.localtime()
print('현재 시각은 %d년 %d월 %d일 %d시 %d분 %d초 입니다' % (now.tm_year, now.tm_mon, now.tm_mday,
                                              now.tm_hour, now.tm_min, now.tm_sec))

# str.format()

# place holder : { }
print('my name is {}, {} years old'.format('Hong', 27))
# {idx}
print('my name is {1}, {0} years old'.format(27, 'Hong'))
# {key}
print('my name is {name}, {age} years old'.format(name='Hong', age=27))
# {:format}
print('Count : {:3d}EA, Price : ${:.2f}'.format(1, 12.3456))

# f-string(python 3.6+)

name = 'Hong'
age = 27
f'my name is {name}, {age} years old'

f'{100-age} years left until you are 100.'

a = ','
a.join('edef')

type('가')

'가'.encode('utf-8')

type('가'.encode('utf-8'))

# 변수보기
a = 'abcd'
b = 1234
b
a

display(a)
display(b)

print('안녕하세요')
print('안녕하세요')
print('안녕하세요')

print(123, end=' ')
print(456)

print('123', end='\t')
print('abc')

print('abc')
print()
print()
print()
print()
print('abc')

print('abc', end='')
print('abc', end='')
print('abc')

print('abc',10, 20, 30, sep=' ')

print('abc',10, 20, 30, sep=',')

print("120", 123, 'aaasdfsd', sep=':')

# 이름을 입력받는 예
name = input('이름을 입력하세요: ')
name

# 숫자를 하나 입력 받아 정수로 변환하여 num 이라는 이름을 부여합니다.
num = int(input('숫자: '))
num

data = input('입력').split()
data

type('가')

'가'.encode('utf8')

type('가'.encode('utf8'))

a = [1,2,3]
b = [4,5,6]
a+b

a*3

# 대괄호와 콤마의 사용
mylist = [1, 3, 5, 7]
mylist

# 요소가 1개인 리스트 생성
mylist = [1]
mylist

# list 함수를 사용
mylist = list('123456789')
mylist

# list의 크기
x = [157, 49, 'Latte', ['SoYoung Yoon', 25]]

# x의 요소의 개수(=크기)는?

len(x[-1])

a = 'hello python world'
a[0], type(a[0])

my = [1,2,3,4]
my[0], type(my[0])

a = 'hello python world'
a[0:1], type(a[0:1])

my = [1,2,3,4]
my[0:1], type(my[0:1])

# 문자열의 indexing 및 slicing 결과
a = 'hello python world'
type(a[-1]), type(a[:])

mylist = [7, 3, 8, 9, 1, 4]
mylist[0], mylist[-6]

type(mylist[0])

mylist = [7, 3, 8, 9, 1, 4]
type(mylist[1:3])

# 결과와 동일하도록 slice를 채워 보세요

mylist[::-1]   # 뒤집기

mylist = [1,[3,5,7],[5,7,9]]
mylist[:1]

mylist = [[1,3,5],[3,5,7],[5,7,9]]
mylist, type(mylist)

# 출력에 알맞은 index 번호를 넣어 보세요.

type(mylist[1][1])

mylist = [[1,3,5],[3,5,7],[5,7,9]]
mylist[:1]

a = [1, 2, 3]
a

a[2] = 4
a

a[1:2] = ['c', 'd', 'e']
a

a[1] = ['c', 'd', 'e']
a

a = [1, 2, 3]
a.append(4)
a

a = [1, 2, 3]
a.insert(0, 4)
a

score = [['math', 89], ['english']]
score[1].append(85)
score

a = [1,2,3]
del a[1]
a

a = [1,2,3]
print(a.remove(1))
a

a = [1,2,3]
print(a.pop(1))
a

a = [1,2,3,4]
a.reverse()
a

a = [1,4,2,3]
a.sort()
a

a = [1,2,3,1,2,3,1]
a.count(1)

a = [1,2,3]
a.extend([4,5])
a

mylist = [1,3,5,4,2]
mylist[::-1]

str(['Python','is','too','interesting'])

mylist = ['Python','is','too','interesting']
' '.join(mylist)

a = 10
b = 20
a, b

# 소괄호 내부에 요소(item, element)를 콤마(,)로 구분하여 나열함
t = (1, 2, 3)
t

# tuple 함수 사용  (list가 tuple로 변경됨)
t = tuple([1,3,5])
t

t = tuple(range(0, 10))
t

t = 1, 2, 3   # 소괄호를 이용하지 않고 생성
t

t = (1)
print(t, type(t))

t1 = (1,2,3)
t1[0]

t1[0] = 1

import sys

sys.getsizeof([1,2,3]), sys.getsizeof((1,2,3))

list(range(0, 20, 1))

list(range(20))

r = range(0,20,2)
r

11 in r

10 in r

r.index(10)

r[5]

myStr = 'Python'
list(myStr)

tuple(myStr)

str(tuple(myStr))

myList = ['hello', 'dong', 'jin']
' '.join(myList)

list('python')

tuple('python')

''.join(list('python'))

''.join(tuple('python'))

a = {1:'b'}
a[2] = 'c'
a['name'] = 'tom'
a

a['name'] = 'Jerry'
a

del a[1]
a

a.pop('name')

# dict 함수 이용
# key는 문자열만 사용가능하며, 이름규칙을 따른다
# dict(key=value, key=value, ...)  => dict(**kwargs) 라고 표기
a = dict(m = 'b', 지역='서울')
a

# key는 변경 불가능한 객체(immutable) 만 사용 가능 
# immutable : 숫자, 문자열, tuple
b = {(1,2): 'tuple'}
print(b, b[(1, 2)])

a = dict(m = 'b', 지역='서울')
a['지역'] = '인천'
a

a['이름'] = '홍길동'
a

# dict.update(dict),  dict.update(key=value, key=value, ...)
# 여러 아이템을 수정/추가
a.update({'이름': '흥부', 'age':1000, '지역':'어디게?'})
a

a.update(age=123, m='x')
a

a.keys()

a.values()

a.items()

a['name']

a.get('name')

a['이름']

'name' in a

'age' in a

A = {'A':90, 'B':80, 'C': 70}
print(A.pop('B'))
A

a, type(a)

b = set('cdecde')
b

a|b

a.union(b)

a&b

a.intersection(b)

s = set('Hello')
s

s1 = set([1,2,3])
s1

myList = list(s1)
myList

myList = tuple(s1)
myList

a = [1,1,2,2,3,4,4,5,6,7,2]
a = list(set(a))
a.sort(reverse=True)
print(a)

set('python') & set('world') & set('hello')

set('python') | set('world') | set('hello')

set(['X1', 'X2', 'X3'] ) & set(['X4', 'X2', 'X3'] ) & set(['X1', 'X5', 'X3'] )

print('Hello')

i

10 or 20, 10 and 20

'hello\npython'

print('hello\npython')

print('python\rhello')  

print('python"hello"')

print('python\'hello\'')

print("python'hello'") #혼용 불가하여 이렇게 사용가능

date = 20180522
weather = 'Rainy'
date,weather

print(date,weather)

'20211122Rainy'
date = '20211122Rainy'[:8]
weather = '20211122Rainy'[8:]
date,weather

data = '881120-1064533'
data[7]

''' '2021122Rainy'
date = '2021122Rainy'[:7]
weather = '2021122Rainy'[7:]
date,weather'''

name = "Jung"
age = 29
f'My name is {name}, {age} years old'

f'{100-age} years left until you are 100.'

pi = 3.141592
f'{pi}', f'{pi : .2f}'

import string
string.whitespace

'\x0b\x0c'

print('\x0b''\x0c')

'                   abc                 '.strip()

'123643634abc76935494'.strip('1234567890')

'\tabc\n\t'.strip()

"'print(date,weather)'"

print(date,weather)

'''print(date,weather)'''

"""print(date,weather)"""

mylist = [list('abc'), list('123')]
mylist

mylist[0][1]

mylist = [1,2,3]
mylist[1] = 100
mylist

mylist[1] = [100,200,300]
mylist

mylist = [1,2,3]
mylist[1:2] = [100,200,300]
mylist

mylist

score = [['math',89],['english']]
score

score[1].append(85)
score

score.append(['science',100])
score

a

c = ','
c.join(['2', '4', '5', '3', '1'])

b = ['python','is','too','interesting']
str(b)

' '.join(b)

mydict = {'a':10, 1:20, (1,2):'삼십'}
mydict

mydict = dict(a=10, b=20 ,c=30)
mydict

mydict['age'] = 500
mydict

mydict['지역']

print(mydict.get('지역'))

mydict.get('age')

#멤버쉽 연산자
'지역' in mydict 

if 'age' in mydict:
    print(mydict['age'])