Consider below given two sets of codes, which are nearly identical, along with their execution in Python shell. Notice that first code-fragment after taking input gives error, while second code-fragment does not produce error. Can you tell why ?

(a)

>>> print(num = float(input("value1:")) )  
value1:67

TypeError: 'num' is an invalid keyword argument for this function

(b)

>>> print(float(input("valuel:")) )
value1:67

67.0

Predict the output of the following code :

days = int (input ("Input days : ")) * 3600 * 24
hours = int(input("Input hours: ")) * 3600 
minutes = int(input("Input minutes: ")) * 60 
seconds = int(input("Input seconds: ")) 
time = days + hours + minutes + seconds 
print("Total number of seconds", time)

If the input given is in this order : 1, 2, 3, 4

Correct the following program so that it displays 33 when 30 is input.

val = input("Enter a value")
nval = val + 30
print(nval)

Write a program that displays a joke. But display the punchline only when the user presses enter key.
(Hint. You may use input( ))