Link to the previous post: https://statinfer.com/104-1-3-python-objects/

In this post we will go through some commonly used conditional operations.

if-then-else statement
for loop
break in for loop

If-Then-Else statement

If Condition

In [100]:

age=60
if age<50:
    print("Group1")
print("Done with If")

Done with If

If-else statement

In [101]:

age=60
if age<50:
    print("Group1")
else:
    print("Group2")
print("Done with If else")

Group2
Done with If else

Multiple else conditions in if

In [102]:

marks=75

if(marks<30):
    print("fail")
elif(marks<60):
    print("Second Class")
elif(marks<80):
     print("First Class")
elif(marks<100):
     print("Distinction")
else:
    print("Error in Marks")

First Class

In [103]:

marks=20

if(marks<30):
    print("fail")
elif(marks<60):
    print("Second Class")
elif(marks<80):
     print("First Class")
elif(marks<100):
     print("Distinction")
else:
    print("Error in Marks")

fail

Nested if

In [104]:

x=45

if(x<50):
    print("Number is less than 50")
    if(x<40):
         print ("Number is less than 40")
         if(x<30):
             print("Number is less than 30")
         else:
             print("Number is greater than 30")
    else:
        print("Number is greater than 40")
else:
    print("Number is greater than 50")

Number is less than 50
Number is greater than 40

In [105]:

x=35

if(x<50):
    print("Number is less than 50")
    if(x<40):
         print ("Number is less than 40")
         if(x<30):
             print("Number is less than 30")
         else:
             print("Number is greater than 30")
    else:
        print("Number is greater than 40")
else:
    print("Number is greater than 50")

Number is less than 50
Number is less than 40
Number is greater than 30

For loop

Example-1

In [107]:

my_num=1

for i in range(1,20):
    my_num=my_num+1
    print("my num value is", my_num)
    i=i+1

my num value is 2
my num value is 3
my num value is 4
my num value is 5
my num value is 6
my num value is 7
my num value is 8
my num value is 9
my num value is 10
my num value is 11
my num value is 12
my num value is 13
my num value is 14
my num value is 15
my num value is 16
my num value is 17
my num value is 18
my num value is 19
my num value is 20

Example-2

In [108]:

sumx = 0 
x=1

for x in range(1,20): 
     sumx = sumx + x
     print(sumx)

Break Statement in for loop

To stop execution of a loop
Stopping the loop in midway using a condition

In [110]:

sumx = 0 
x=1

for x in range(1,200): 
     sumx = sumx + x
     if(sumx>500):
         break
     print(sumx)

The next post is about Python Packages.
Link to the next post :https://statinfer.com/104-1-5-python-packages/

20th June 2017

104.1.4 Conditional operators in Python

Mainly used conditional operators in python.

If-Then-Else statement

If Condition

If-else statement

Multiple else conditions in if

Nested if

For loop

Example-1

Example-2

Break Statement in for loop

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104.1.4 Conditional operators in Python

Mainly used conditional operators in python.

If-Then-Else statement

If Condition

If-else statement

Multiple else conditions in if

Nested if

For loop

Example-1

Example-2

Break Statement in for loop

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