Problem Solving Using Python Programming (Part - 1) смотреть онлайн

In This Video I Have Explained About :
1.Round() Function
2.Comments Function
3.Promblem Solving Using Python

Watch The Video Completely To Know Complete Information

Round :

Rounding Numbers
round(number, digits(optional)) Rounds the float value to the given number of decimal digits.

digits - define the number of decimal digits to be considered for rounding.

when not specified default is 0

Code:
a = round(3.14,1)
print(a)
a = round(3.14)
print(a)

Output :
3.1
3

Floating Point Approximation :

Float values are stored approximately.

Code :
print(0.1 + 0.2)

Output :
0.30000000000000004

Floating Point Errors :

Sometimes, floating point approximation gives unexpected results.

Code:
print((0.1 + 0.2) == 0.3)

Output :
False

To avoid these unexpected results, we can use round()

Code :
a = round((0.1 + 0.2), 1)
print(a)
print(a == 0.3)

Output :
0.3
True

Comments :

Comment starts with a hash #

It can be written in its own line next to a statement of code.

Code :
n = 5
# Finding if Even
even = (n % 2 == 0)
print(even) # prints boolean value

Output :
False

Python Programming Main Code :

n = int(input())
#print(n)

left_spaces_count = n - 1
left_spaces = " " * left_spaces_count
row_output = left_spaces + "*"
print(row_output)

hollow_spaces_count = -1
for row in range(2, n + 1):
left_spaces_count = n - row
left_spaces = " " * left_spaces_count
hollow_spaces_count = hollow_spaces_count + 2
hollow_spaces = " " * hollow_spaces_count
row_output = left_spaces + "*" + hollow_spaces + "*"
print(row_output)

for row_bottom in range(1,n-1):
left_spaces_count = row_bottom
left_spaces = " " * left_spaces_count
hollow_spaces_count = hollow_spaces_count - 2
hollow_spaces = " " * hollow_spaces_count
row_output = left_spaces + "*" + hollow_spaces + "*"
print(row_output)

left_spaces_count = n - 1
left_spaces = " " * left_spaces_count
row_output = left_spaces + "*"
print(row_output)

Input :
6

Output :

*
* *
* *
* *
* *
* *
* *
* *
* *
* *
*

Note : Try Out Your Own Input In The Above Mentioned Code

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