반복문

# 기본 반복문 : for , while

v1= 1
while v1 < 11:
    print("v1 is :", v1) #v1 is : 1 ~ v1 is : 10
    v1 += 1

for v2 in range(10):
    print("v2 is: ", v2) # v2 is:  0 ~ v2 is:  9

for v3 in range(1, 11):
    print("v3 is:", v3) # v3 is: 1 ~ v3 is: 10

- 1 ~ 100 합

sum1 = 0
cnt1 = 1

while cnt1 <= 100:
    sum1 += cnt1
    cnt1 += 1
print("1 ~ 100 합 : ", sum1) # 1 ~ 100 합 :  5050
print("1 ~ 100 합 :  ", sum(range(1,101))) # 1 ~ 100 합 :   5050
print("1 ~ 100 짝수 합 :  ", sum(range(1,101,2))) # 1 ~ 100 짝수 합 :   2500

# 시퀀스(순서가 있는) 자료형 반복

- 문자열, 리스트, 튜플, 집합, 딕셔너리

- iterable 리턴 함수 : range, reversed, enumerate, filter, map, zip

names = ["kim", "park", "cho", "choi", "yoo"]

for i in names:
    print(" You are :", i) #  You are : kim ~....  You are : yoo

word  ="dreams" 

for j in word:
    print("word : ", j) # word :  d ~... word :  s

my_info = {
    "name" : "kim",
    "age" : 24,
    "city" : "seoul"
}

# 기본값은 key 호출
for key in my_info: 
    print("my_info : ", key) # my_info : , name   my_info :  age , my_info :  city

#값
for key in my_info.values():
    print("my_info : ", key) # my_info :  kim , my_info :  24 , my_info :  seoul
    
# 키    
for key in my_info.keys():
    print("my_info : ", key) # my_info : , name   my_info :  age , my_info :  city
    
# 값 and 키
for k,v in my_info.items(): 
    print("my_info : ", k,v) # my_info :  name kim , my_info :  age 24 , my_info :  city seoul


# 대소문자 반대로 출력
name = "KeenRY"

for n in name:
    if n.isupper():
        print(n.lower())
    else:
        print(n.upper())
	# k E E N r y

# break

numbers = [14, 3, 4, 7, 10, 24, 17, 2, 33, 15, 34, 36, 38]

for num in numbers:
    if num ==33:
        print("found : 33!")
        break
    else:
        print("not found : 33!")
        			# not found : 33!

# for - else 구문

(반복문이 정상적으로 수행 된 경우 else 블럭 수행, break 들어갔다는 것은 반복문 정상 수행된것이 아니므로 for의 else문은 실행되지 않음)

for num in numbers:
    if num ==33:
        print("found : 33!")
        break
    else:
        print("not found : 33!")
else: 
    print("Not found 33...")
    		

# continue

lt = ["1", 2, 5, True, 4.3, complex(4)]

for v in lt:
    if type(v) is float:
        continue
    print("타입 :", type(v))
    				# 타입 : <class 'str'>
				# 타입 : <class 'int'>
				# 타입 : <class 'int'>
				# 타입 : <class 'bool'>
				# 타입 : <class 'complex'>
name = "gyomni"
print(list(reversed(name))) # ['i', 'n', 'm', 'o', 'y', 'g']
print(tuple(reversed(name))) # ('i', 'n', 'm', 'o', 'y', 'g')