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1.
You are given two python files, a.py and b.py
File: /somepath/a.py
File: /somepath/b.py
The code given below fails with the exception that follows. Why?
File: /somepath/a.py
from b
import multiply_b, print_b
def print_number(number):
number = multiply_b(number, 4)
print number
def print_b_via_a():
print_b()
import multiply_b, print_b
def print_number(number):
number = multiply_b(number, 4)
print number
def print_b_via_a():
print_b()
File: /somepath/b.py
from a
import print_number
def print_b():
print_number(3)
def multiply_b(number, multiplier):
return number * multiplier
import print_number
def print_b():
print_number(3)
def multiply_b(number, multiplier):
return number * multiplier
The code given below fails with the exception that follows. Why?
>>>
import a
ImportError: cannot
import name print_number
import a
ImportError: cannot
import name print_number
2.
The following piece of Python code should produce output 5. What changes should be made to the code to achieve this?
class IntComparer(object):
""
"Class that compares two integers."
""
def __init__(self, x, y):
self.x = x
self.y = y
def greater(self):
""
"Returns the greater integer."
""
if self.x < self.y:
return self.x
else :
return self.y
def smaller(self):
""
"Returns the smaller integer."
""
numbers = [self.x, self.y]
numbers.remove(self.greater())
return numbers[0]
comparer = IntComparer(5, 9)
print(comparer.smaller())# Output should be 5
""
"Class that compares two integers."
""
def __init__(self, x, y):
self.x = x
self.y = y
def greater(self):
""
"Returns the greater integer."
""
if self.x < self.y:
return self.x
else :
return self.y
def smaller(self):
""
"Returns the smaller integer."
""
numbers = [self.x, self.y]
numbers.remove(self.greater())
return numbers[0]
comparer = IntComparer(5, 9)
print(comparer.smaller())# Output should be 5
3.
What is the output of the following Python code:
def func(x, y = 5, z = 10):
print('x: ', x, 'y: '
y, 'z: ', z)
1: func(5, 10)
2: func(5, z = 15)
3: func(z = 5, 10)
4: func(x = 5, z = 10)
print('x: ', x, 'y: '
y, 'z: ', z)
1: func(5, 10)
2: func(5, z = 15)
3: func(z = 5, 10)
4: func(x = 5, z = 10)