[Python] 221026_조건문, 반복문, 사용자 정의 함수, 파일 읽고 쓰기 복습

password = 'data'
answer = input('비밀번호를 입력해 주세요: ')
if password == answer:
  print('correct')

num  = int(input('숫자를 입력해 주세요 : '))
if num <0:
  print('0보다 큰 숫자를 입력해 주세요')
else:
  if num%2==0:
    print('짝')
  else:
    print('홀')

score = int(input('점수: '))
if score >= 90:
  print('a')
elif score >= 80:
  print('b')
else:
  print('f')

answer = input('통신사 : ').upper()
telecom = 0
tel3 = ['SKT','SK','SK텔레콤','SK 텔레콤','KT','LG', 'LG U+', 'LG 유플러스']
if answer in tel3:
  if answer in (tel3[0:3]):
    telecom = 'SK 텔레콤'
  elif answer in (tel3[5:7]):
    telecom = 'LG U+'
  else:
    telecom = 'KT'
  print('고객님 통신사는 %s 입니다.'%telecom)
else:
  print('오류')

age = int(input('연령: '))
ten = 0
if age >= 60:
  ten = '60대 이상'
elif age >= 50:
  ten = '50대'
elif age >= 40:
  ten = '40대'
else:
  ten = '30대 이하'
print('고객님 연령대는 %s 입니다.'%ten)

total = 1
for i in range(1,8):
  total *= i
print(total)

total = 1
i = 1
while i<=7:
  total*=i
  i+=1
print(total)

num = int(input('구구단 : '))
for i in range(2,10):
  print('%d x %d = %d'%(num,i,num*i))

num = int(input("구구단?: "))
i = 1
while i<=9:
  print("%d x %d = %d"%(num,i,num*i))
  i+=1

for i in range(2,10):
  for j in range(1,10):
    print("%d x %d = %d"%(i,j,i*j))

i =2
j =1
while i<=9:
  while j<=9:
    print('%d x %d = %d'%(i,j,i*j))
    j+=1
  j =1
  i+=1

i = 0
while i<5:
  print('*'*10)
  i+=1

for i in range(0,5):
  print('*'*10)

money = 1000
year =0
while money <= 2000:
  money*=1.07
  year += 1
print('%d년'%year)

num = 0
for i in range(1,31):
  if 30%i==0 and 75%i==0:
    num = i
print(num)

num = 0
i = 1
while i<=30:
  if 30%i==0 and 75%i==0:
    num = i
  i+=1
print(num)

greetings = ['안녕','니하오','헬로']
for i in greetings:
  print(i)

a = ['aaaaa','bbb','ccccc']
b=[]
for i in a:
  if len(i)==5:
    b.append(i)
print(b)

words = {'사과':'apple','컴퓨터':'computer','책상':'desk'}
for i in words.keys():
  answer = input('%s를 뜻하는 영어: '%i)
  if answer == words[i]:
    print('O')
  else:
    print('X')

scores = {'김':90, '박':95, '이':84}
sum = 0
for i in scores:
  sum+= scores[i]
  print('%s : %d'%(i,scores[i]))
print('합: %d, 평균: %d'%(sum, sum/len(scores)))

def tae(s):
  print(s)
tae('hello')

def n_plus_1(n):
  result = n+1
  # return result
  print(result)
# print(n_plus_1(4))
n_plus_1(4)

def make_url(str):
  print('www.'+str+'.com')
make_url('naver')

def make_list(str):
  print(list(str))
make_list('naver')

def make_list_no(str):
  a = []
  for i in list(str):
    if i in a:
      pass
    else:
      a.append(i)
  print(a)
make_list_no('facebook')

def picknum(num):
  a = []
  for i in num:
    if i % 2 == 0:
      a.append(i)
  print(a)
picknum([3,4,5,6,7,8])

def average(list):
  result = sum(list)/len(list)
  print(result)
average([0,10,20,30,40,50,60,70,80,90,100])

f = open('a.txt','r')
line = f.readline()
print(line)
f.close()

f = open('aaa.txt','r')
while 1:
  line = f.readline()
  if not line:
    break
  print(line)
f.close()

f = open('even_number.txt','r')
lines = f.readlines()
for i in lines:
  print(i)
f.close()

f = open('even_number.txt','r')
lines = f.readlines()
for i in lines:
  print(i.strip())
f.close()

f = open('even_number.txt','r')
lines = f.read()
print(lines)
f.close()

f = open('even_number_221026.txt','w')
for i in range(1,31):
  if i%2==0:
    f.write('%s\n'%str(i))
f.close()
f = open('even_number_221026.txt','r')
read = f.read()
print(read)
f.close()

star = open('star_221026.txt','w')
for i in range(1,7):
  star.write('%s\n'%('*'*i))
star.close()
star = open('star_221026.txt','a')
for i in range(1,7):
  star.write('%s\n'%('*'*(7-i)))
star.close()
star = open('star_221026.txt','r')
read = star.read()
print(read)
star.close()

f1 = open('test_221026.txt','w')
f1.write('Life is too short')
f1.close()
f2 = open('test_221026.txt','r')
print(f2.read())
f2.close()