Python Programming Session 3 - Operators and Data Types

Overview

• Aligned with B Tech in Data Science and AI program.
• Includes additional info for data scientists, data analysts, data engineers.
• Also beneficial for web/mobile app developers.

Resources

• Visit 360digitmg.com for Python Programming fundamentals.
• Use the mind map for detailed topics and to add more information.
• Reinforce learning by practicing, not just by watching videos.

Recap from Previous Sessions

• Discussed arithmetic, relational/comparison, assignment, logical operations.

Comments in Python

• Anything written after a # is a comment.
• Useful for making notes directly in the code (e.g., Jupyter, Spider, Google Colab).

Identity Operators

• is and is not are used for comparison.
• Example usage:
  • 1 is 1 returns True
  • 2 is 1 returns False
  • python is Python returns False due to case sensitivity

Complex Numbers

• Include real and imaginary components, e.g., 2 + 3j.
• Data type is complex.

Boolean Type

• Values: True and False.
• Examples:
  • type(True) returns bool
  • type(False) returns bool
  • True + True returns 2

Membership Operators

• in and not in to check membership in sequences.
• Example usage:
  • 'y' in 'Python' returns True
  • 'l' in 'Python' returns False

Operators Overview

• Exponential, complement (~), arithmetic (+, -, *, /, %, //), bitwise, comparison, identity, membership, logical operators.
• Evaluation sequence follows PEMDAS (Parentheses, Exponentiation, Multiplication/Division, Addition/Subtraction).

Data Types

1. Numeric: Integer, Float, Complex
   • Integer: No decimals.
   • Float: With decimals.
   • Complex: Real + Imaginary parts.
2. Boolean: True or False
3. List: Ordered sequence of items within square brackets, mutable.

List Data Type

• Creation and Access: Use square brackets and comma-separated values.
• Modification: Append, insert, remove, pop, reverse, count, sort.
• Examples:
  • list1 = [1, 2, 3]
  • list1.append(4)
  • list1.remove(2)
  • list1.pop(0)
  • list1.sort(reverse=True)

Practical Examples

• Conducted practical demonstrations using various list operations.
• Importance of typing code and following best practices (e.g., spacing around operators).

Future Topics

• Will discuss more about data types and other Python features.

Conclusion

• Join LinkedIn page and answer questions for a joint certificate from NASSCOM and 360digitMG.
• Ensure to practice coding for effective learning.
• Subscribe to the YouTube channel for more updates.