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Day_20.py
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Day_20.py
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#!/usr/bin/env python
# coding: utf-8
# # Question 80
#
# ### **Question**
#
# > **_Please write a program to print the list after removing even numbers in [5,6,77,45,22,12,24]._**
#
# ---
#
# ### Hints
#
# > **_Use list comprehension to delete a bunch of element from a list._**
#
# ---
#
#
#
# **Solutions:**
# In[1]:
def isEven(n):
return n % 2 != 0
li = [5, 6, 77, 45, 22, 12, 24]
lst = list(filter(isEven, li))
print(lst)
# **OR**
# In[2]:
li = [5, 6, 77, 45, 22, 12, 24]
lst = list(filter(lambda n: n % 2 != 0, li))
print(lst)
# ---
#
# # Question 81
#
# ### **Question**
#
# > **_By using list comprehension, please write a program to print the list after removing numbers which are divisible by 5 and 7 in [12,24,35,70,88,120,155]._**
#
# ---
#
# ### Hints
#
# > **_Use list comprehension to delete a bunch of element from a list._**
#
# ---
#
#
#
# **Solutions:**
# In[3]:
li = [12, 24, 35, 70, 88, 120, 155]
li = [x for x in li if x % 35 != 0]
print(li)
# ---
#
# # Question 82
#
# ### **Question**
#
# > **_By using list comprehension, please write a program to print the list after removing the 0th, 2nd, 4th,6th numbers in [12,24,35,70,88,120,155]._**
#
# ---
#
# ### Hints
#
# > **_Use list comprehension to delete a bunch of element from a list.
# > Use enumerate() to get (index, value) tuple._**
#
# ---
#
#
#
# **Solutions:**
# In[4]:
li = [12, 24, 35, 70, 88, 120, 155]
li = [li[i] for i in range(len(li)) if i % 2 != 0]
print(li)
# ---
#
# # Question 83
#
# ### **Question**
#
# > **_By using list comprehension, please write a program to print the list after removing the 2nd - 4th numbers in [12,24,35,70,88,120,155]._**
#
# ---
#
# ### Hints
#
# > **_Use list comprehension to delete a bunch of element from a list.
# > Use enumerate() to get (index, value) tuple._**
#
# ---
#
#
#
# **Solutions:**
# In[5]:
# to be written
li = [12, 24, 35, 70, 88, 120, 155]
li = [li[i] for i in range(len(li)) if i < 3 or 4 < i]
print(li)
# ---
#
# # Question 84
#
# ### **Question**
#
# > **_By using list comprehension, please write a program generate a 3\*5\*8 3D array whose each element is 0._**
#
# ---
#
# ### Hints
#
# > **_Use list comprehension to make an array._**
#
# ---
#
# **Solution:**
# In[6]:
array = [[[0 for col in range(8)] for col in range(5)] for row in range(3)]
print array
# In[ ]: