
print('hello world')

hello world


print('안녕')

안녕


print('こんにちは')

こんにちは


print('안녕 こんにちは')

안녕 こんにちは


def to_f(c):
    print (c* 9/5 + 32)


to_f(0)

32.0


#how can I add ℉ in the result? also, how can I multiply 10 to get rid of .0?


def to_c(f):
    print ((f - 32)* 5/9)


to_c(32)

0.0


to_f(to_c(25))

-3.888888888888889

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/tmp/ipykernel_7672/3415340868.py in <module>
----> 1 to_f(to_c(25))

/tmp/ipykernel_7672/3211986611.py in to_f(c)
      1 def to_f(c):
----> 2     print (c* 9/5 + 32)

TypeError: unsupported operand type(s) for *: 'NoneType' and 'int'


to_c(to_f(90))

194.0

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/tmp/ipykernel_7672/2722568589.py in <module>
----> 1 to_c(to_f(90))

/tmp/ipykernel_7672/243915947.py in to_c(f)
      1 def to_c(f):
----> 2     print ((f - 32)* 5/9)

TypeError: unsupported operand type(s) for -: 'NoneType' and 'int'


# don't know how to fix line 66, 67


def to_f(c):
    if c < -273.15:
        raise ValueError("Temperature value is below absolute zero.")
    return ((9/5)*c) + 32


to_f(-277)

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
/tmp/ipykernel_7672/855616593.py in <module>
----> 1 to_f(-277)

/tmp/ipykernel_7672/83324594.py in to_f(c)
      1 def to_f(c):
      2     if c < -273.15:
----> 3         raise ValueError("Temperature value is below absolute zero.")
      4     return ((9/5)*c) + 32

ValueError: Temperature value is below absolute zero.


to_f(32)

89.6


def sign(num):
    answer = '?'
    if num > 0:
        answer = '+'
    if num < 0:
        answer = '-'
    if num == 0:
        answer = ''
    return answer


sign(4)

'+'


sign(-20)

'-'


sign(0)

''


sign(1)

'+'


def sign(num):
    answer = '?'
    if num > 0:
        answer = '+'
    elif num < 0:
        answer = '-'
    else:
        answer = ''
    return answer


name = 'Chae'
name [-1]

'e'


name[-2]

'a'


name[3]

'e'


name[-4]

'C'


name[0]

'C'


def gender(name):
    if name[-1] == '돌':
        return 'more likely to be male but if not, cool name!'
    if name[-1] == '순':
        return 'more likely to be female but if not, cool name!'


gender('빵돌')

'more likely to be male but if not, cool name!'


gender('철수')


gender('빵순')

'more likely to be female but if not, cool name!'


gender('영희')


def gender(name):
    genderanswer = 'maybe try different name!?'
    if name[-1] == '돌':
        genderanswer = 'more likely to be male..?'
    if name[-1] == '순':
        genderanswer = 'more likely to be female..?'
    return genderanswer


gender('빵야')

'maybe try different name!?'


gender('빵돌')

'more likely to be male..?'


gender('빵순')

'more likely to be female..?'


def to_m(hour):
    return hour*60


to_m(2)

120


to_m(2.5)

150.0


def video(minute):
    runningtime = 'YOU decide whether you will watch it or not.'
    if minute > 30:
        runningtime = 'If you are in hurry, maybe you can watch it later..?'
    elif minute < 30:
        runningtime = 'Ahhh, totally watchable.'
    else:
        runningtime = 'Tbh this is the maximum length of video that I can watch.'
    return runningtime


video(100)

'If you are in hurry, maybe you can watch it later..?'


video(20)

'Ahhh, totally watchable.'


video(30)

'Tbh this is the maximum length of video that I can watch.'


list(range(5))

[0, 1, 2, 3, 4]


list(range(0, 5))

[0, 1, 2, 3, 4]


list(range(1, 6))

[1, 2, 3, 4, 5]


list(range(15, 18))

[15, 16, 17]


n = number
n = 5
list(range(1, n+1))

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
/tmp/ipykernel_7672/3677463180.py in <module>
----> 1 n = number
      2 n = 5
      3 list(range(1, n+1))

NameError: name 'number' is not defined


answer = 1
for num in range (1, 6):
    answer = answer * num
    print(answer) #Display the current value
answer

1
2
6
24
120

120


def factorial(n):
    answer = 1
    for num in range (1, n+1):
        answer = answer * num
    return answer


factorial(5)

120


factorial(0)

1


def factorial(n):
    answer = 1
    if n == 0:
        return 0
    else for num in range (1, n+1):
        answer = answer * num
    return answer

  File "/tmp/ipykernel_7672/3939558402.py", line 5
    else for num in range (1, n+1):
           ^
SyntaxError: invalid syntax


def fact(n):
    if n == 0:
        return 1
    else:
        return n * fact(n-1)


fact(2)

2


fact(0)

1


fact(1)

1


fact(3)

6


fact(5)

120


#the functions in line 175 and line 167, basically do the same job but line 175 is better and compact


fact(-4)

---------------------------------------------------------------------------
RecursionError                            Traceback (most recent call last)
/tmp/ipykernel_7672/211583457.py in <module>
----> 1 fact(-4)

/tmp/ipykernel_7672/3422927878.py in fact(n)
      3         return 1
      4     else:
----> 5         return n * fact(n-1)

... last 1 frames repeated, from the frame below ...

/tmp/ipykernel_7672/3422927878.py in fact(n)
      3         return 1
      4     else:
----> 5         return n * fact(n-1)

RecursionError: maximum recursion depth exceeded in comparison


fact(4)

24


def factfail(n):
    return n * factfail(n-1)


factfail(3)

---------------------------------------------------------------------------
RecursionError                            Traceback (most recent call last)
/tmp/ipykernel_7672/2206540228.py in <module>
----> 1 factfail(3)

/tmp/ipykernel_7672/1101104101.py in factfail(n)
      1 def factfail(n):
----> 2     return n * factfail(n-1)

... last 1 frames repeated, from the frame below ...

/tmp/ipykernel_7672/1101104101.py in factfail(n)
      1 def factfail(n):
----> 2     return n * factfail(n-1)

RecursionError: maximum recursion depth exceeded


factfail(5)