In [1]:
print('Hello World')

Hello World
In [21]:
def to_f(c):
    return (9/5*c)+32
In [18]:
to_f(15)

59.0
In [6]:
to_f(0)
Out[6]:
32.0
In [24]:
to_f(100)
Out[24]:
212.0
In [20]:
def to_c(f):
    return (5/9)*(f-32)
In [23]:
to_c(32)
Out[23]:
0.0
In [26]:
to_f(to_c(25))
Out[26]:
25.0
In [28]:
def to_f(c):
    return (9/5*c)+32
In [35]:
def to_f(c):
    if c<-273.15
        raise ValueError("Temperature value is below absolute zero.")
    return ((9/5)*c)+32

  File "/tmp/ipykernel_3490/2670143301.py", line 2
    if c<-273.15
                ^
SyntaxError: invalid syntax
In [36]:
to_f(-274)
Out[36]:
-461.2
In [44]:
def sign(num):
    answer='?'
    if num>0:
        answer='+'
    if num<0:
        answer='-'
    return answer
In [42]:
sign(4)
Out[42]:
'+'
In [39]:
sign(-20)
Out[39]:
'-'
In [45]:
sign(0)
Out[45]:
'?'
In [43]:
sign(1)
Out[43]:
'+'
In [48]:
def sign(num):
    answer='?'
    if num>0:
        answer='+'
    elif num<0:
        answer='-'
    else:
        answer:''
    return answer
In [49]:
name='Paula'
name[-1]
Out[49]:
'a'
In [50]:
word='hello'
word[-1]
Out[50]:
'o'
In [52]:
'world'[-1]
Out[52]:
'd'
In [54]:
def gender(name):
    if name[-1]=='a':
        return 'female'
    if name[-1]=='o':
        return 'male'
In [55]:
gender('Apollo')
Out[55]:
'male'
In [57]:
gender('Nick')
In [61]:
def gender(name):
    indicated='?'
    if name[-1]=='a':
        indicated= 'female'
    if name[-1]=='o':
        indicated='male'
    return indicated
In [62]:
gender('Nick')
Out[62]:
'?'
In [64]:
def tocat(hmn):
    return (hmn*7)
In [65]:
tocat(15)
Out[65]:
105
In [66]:
list(range(5))
Out[66]:
[0, 1, 2, 3, 4]
In [67]:
list(range(0,5))
Out[67]:
[0, 1, 2, 3, 4]
In [68]:
list(range(1,6))
Out[68]:
[1, 2, 3, 4, 5]
In [71]:
list(range(15,18))
Out[71]:
[15, 16, 17]
In [73]:
answer=1
for num in range(1,6):
    answer=answer*num
    print(answer)#Display the current value
answer

1
2
6
24
120
Out[73]:
120
In [99]:
def factorial(n):
    answer=1
    for num in range(1,n+1):
        answer=answer*num
    return answer
In [100]:
factorial(15)
Out[100]:
1307674368000
In [79]:
def fact(n):
    if n==0:
        return 1
    else:
        return n*fact(n-1)
In [80]:
fact(15)
Out[80]:
1307674368000
In [101]:
def factfail(n):
    return n*factfail(n-1)
In [105]:
factfail(3)

---------------------------------------------------------------------------
RecursionError                            Traceback (most recent call last)
/tmp/ipykernel_3490/2206540228.py in <module>
----> 1 factfail(3)

/tmp/ipykernel_3490/1374097128.py in factfail(n)
      1 def factfail(n):
----> 2     return n*factfail(n-1)

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

/tmp/ipykernel_3490/1374097128.py in factfail(n)
      1 def factfail(n):
----> 2     return n*factfail(n-1)

RecursionError: maximum recursion depth exceeded
In [113]:
    if n<0:
        raise ValueError('undefined result')
    return answer
In [114]:
factorial(-21)

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
/tmp/ipykernel_3490/1721965092.py in <module>
----> 1 factorial(-21)

/tmp/ipykernel_3490/2416778145.py in factorial(n)
      4         answer=answer*num
      5     if n<0:
----> 6         raise ValueError('undefined result')
      7     return answer

ValueError: undefined result
In [118]:
def fact(n):
    if n<0:
        raise ValueError('undefined result')
    if n==0:
        return 1
    else:
        return n*fact(n-1)
In [119]:
fact(-1)

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
/tmp/ipykernel_3490/2874172109.py in <module>
----> 1 fact(-1)

/tmp/ipykernel_3490/3327227017.py in fact(n)
      1 def fact(n):
      2     if n<0:
----> 3         raise ValueError('undefined result')
      4     if n==0:
      5         return 1

ValueError: undefined result
In [127]:
def doubler(sequence):
    if len(sequence)==0:
        return[]
    else:
        return[2*sequence[0]]+doubler(sequence[1:])
In [126]:
doubler(4)

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/tmp/ipykernel_3490/3336296941.py in <module>
----> 1 doubler(4)

/tmp/ipykernel_3490/2319938741.py in doubler(sequence)
      1 def doubler(sequence):
----> 2     if len(sequence)==0:
      3         return[]
      4     else:
      5         return[2*sequence[0]]+doubler(sequence[1:])

TypeError: object of type 'int' has no len()
In [ ]: