Python Programming Training Certification
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Course Overview
Python is one of the world’s top programming languages used today and Python training has become the most popular training across individuals. Training Basket’s Python Training & Certification course covers basic and advanced Python concepts and how to apply them in real-world applications.Python is a flexible and powerful open-source language that is easy to learn and consists of powerful libraries for data analysis and manipulation. Our Python training course content is curated by experts as per the standard Industry curriculum. The curriculum, coding challenges and real-life problems cover data operations in Python, strings, conditional statements, error handling, shell scripting, web scraping and the commonly used Python web framework Django. Take this Python training and certification course and become job-ready now.
Python for loop
The for loop in Python is used to iterate the statements or a part of the program several times. It is frequently used to traverse the data structures like list, tuple, or dictionary.
The syntax of for loop in python is given below.
- for iterating_var in sequence:
statement(s)
The for loop flowchart
For loop Using Sequence
Example-1: Iterating string using for loop
- str = “Python”
for i in str:
print(i)
Output:
- P
y
t
h
o
n
Example- 2: Program to print the table of the given number .
- list = [1,2,3,4,5,6,7,8,9,10]
n = 5
for i in list:
c = n*i
print(c)
Output:
- 5
10
15
20
25
30
35
40
45
50s
Example-4: Program to print the sum of the given list.
- list = [10,30,23,43,65,12]
sum = 0
for i in list:
sum = sum+i
print(“The sum is:”,sum)
Output:
- The sum is: 183
For loop Using range() function
The range() function
The range() function is used to generate the sequence of the numbers. If we pass the range(10), it will generate the numbers from 0 to 9. The syntax of the range() function is given below.
Syntax:
- range(start,stop,step size)
- The start represents the beginning of the iteration.
- The stop represents that the loop will iterate till stop-1. The range(1,5) will generate numbers 1 to 4 iterations. It is optional.
- The step size is used to skip the specific numbers from the iteration. It is optional to use. By default, the step size is 1. It is optional.
Consider the following examples:
Example-1: Program to print numbers in sequence.
- for i in range(10):
print(i,end = ‘ ‘)
Output:
- 0 1 2 3 4 5 6 7 8 9
Example – 2: Program to print table of given number.
- n = int(input(“Enter the number “))
for i in range(1,11):
c = n*i
print(n,”*”,i,”=”,c)
Output:
- Enter the number 10
10 * 1 = 10
10 * 2 = 20
10 * 3 = 30
10 * 4 = 40
10 * 5 = 50
10 * 6 = 60
10 * 7 = 70
10 * 8 = 80
10 * 9 = 90
10 * 10 = 100
Example-3: Program to print even number using step size in range().
- n = int(input(“Enter the number “))
for i in range(2,n,2):
print(i)
Output:
- Enter the number 20
2
4
6
8
10
12
14
16
18
We can also use the range() function with sequence of numbers. The len() function is combined with range() function which iterate through a sequence using indexing. Consider the following example.
- list = [‘Peter’,’Joseph’,’Ricky’,’Devansh’]
for i in range(len(list)):
print(“Hello”,list[i])
Output:
- Hello Peter
Hello Joseph
Hello Ricky
Hello Devansh
Nested for loop in python
Python allows us to nest any number of for loops inside a for loop. The inner loop is executed n number of times for every iteration of the outer loop. The syntax is given below.
Syntax
- for iterating_var1 in sequence: #outer loop
for iterating_var2 in sequence: #inner loop
#block of statements
#Other statements
Example- 1: Nested for loop
- # User input for number of rows
rows = int(input(“Enter the rows:”))
# Outer loop will print number of rows
for i in range(0,rows+1):
# Inner loop will print number of Astrisk
for j in range(i):
print(“*”,end = ”)
print()
Output:
- Enter the rows:5
*
**
***
****
*****
Example-2: Program to number pyramid.
- rows = int(input(“Enter the rows”))
for i in range(0,rows+1):
for j in range(i):
print(i,end = ”)
print()
Output:
- 1
22
333
4444
55555
Using else statement with for loop
Unlike other languages like C, C++, or Java, Python allows us to use the else statement with the for loop which can be executed only when all the iterations are exhausted. Here, we must notice that if the loop contains any of the break statement then the else statement will not be executed.
Example 1
- for i in range(0,5):
print(i)
else:
print(“for loop completely exhausted, since there is no break.”)
Output:
- 0
1
2
3
4
for loop completely exhausted, since there is no break.
The for loop completely exhausted, since there is no break.
Example 2
- for i in range(0,5):
print(i)
break;
else:print(“for loop is exhausted”);
print(“The loop is broken due to break statement…came out of the loop”)
In the above example, the loop is broken due to the break statement; therefore, the else statement will not be executed. The statement present immediate next to else block will be executed.
Output:
- 0
The loop is broken due to the break statement…came out of the loop. We will learn more about the break statement in next tutorial.
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