Yandex

Python BasicsPython Basics11
❯

  1. 1Introduction to Python
  2. 2Python Hello World Program
  3. 3Python Comments Explained - Beginner’s Guide with Examples
  4. 4Python Variables
  5. 5Python Constants
  6. 6Python Data Types
  7. 7Python Strings
  8. 8Python Type Conversions
  9. 9Python Basic Input and Output - Learn to Take User Input and Print Output
  10. 10Python Operators
  11. 11Python Operator Precedence – Evaluation Order with Examples

Python Flow ControlPython Flow Control5
❯

  1. 1Python Conditional Statements
  2. 2Python Loops
  3. 3Python For Loop
  4. 4Python While Loop
  5. 5Python Break and Continue

Python CollectionsPython Collections5
❯

  1. 1Introduction to Python Collections
  2. 2Python Lists
  3. 3Python Dictionaries
  4. 4Python Tuples
  5. 5Python Sets

Python FunctionsPython Functions4
❯

  1. 1Python Functions
  2. 2Python Functions with Parameters
  3. 3Python main() Function
  4. 4Python Lambda Functions

Python File HandlingPython File Handling1
❯

  1. 1Python File Operations – Read, Write, Update & Delete Files

Python Exception HandlingPython Exception Handling3
❯

  1. 1What Are Python Exceptions?
  2. 2Python Exception Handling
  3. 3Python Custom Exceptions

Python OOPsPython OOPs5
❯

  1. 1Python Object-Oriented Programming
  2. 2Python Inheritance
  3. 3Python Multiple Inheritance
  4. 4Python Encapsulation
  5. 5Python Polymorphism

Python Advanced ConceptsPython Advanced Concepts5
❯

  1. 1Python List Comprehension
  2. 2Python Iterators
  3. 3Python Generators
  4. 4Python Closures
  5. 5Python Decorators

Python LibrariesPython Libraries3
❯

  1. 1Python Email Tutorial
  2. 2Python JSON Tutorial – Parse, Read, Write & Handle JSON in Python
  3. 3Python datetime Tutorial - Working with Dates and Times in Python

Python ReferencePython Reference2
❯

  1. 1Python Built-in Functions
  2. 3Python String Methods

Python Built-in FunctionsPython Built-in Functions0
❯

    Python String MethodsPython String Methods0
    ❯

      ProgramGuru

      Python complex() Function – Create Complex Numbers Easily

      Python complex() Function

      The complex() function in Python is used to create complex numbers. A complex number has a real part and an imaginary part, like 3 + 4j.

      This function is useful in math, simulations, electrical engineering, and many scientific applications.

      Syntax

      complex(real=0, imag=0)

      Parameters:

      • real (optional) – The real part (default is 0)
      • imag (optional) – The imaginary part (default is 0)

      Returns:

      • A complex number object: real + imag*j

      Example 1: Real and Imaginary Parts

      z = complex(3, 4)
print(z)
      (3+4j)

      Example 2: Only Real Part

      z = complex(5)
print(z)
      (5+0j)

      Example 3: Using a String

      z = complex("2+3j")
print(z)
      (2+3j)

      Note: If you use a string, it must be a valid complex number format.

      Real-World Use Cases

      • Electrical engineering: representing impedance or current with imaginary components
      • Signal processing and physics simulations
      • Mathematics involving imaginary numbers

      Accessing Real and Imaginary Parts

      z = complex(3, 4)
print(z.real)   # Output: 3.0
print(z.imag)   # Output: 4.0

      Common Mistakes

      • Passing a string with space: complex("2 + 3j") will raise a ValueError.
      • You can’t pass both a string and a second argument: complex("3+4j", 2) is invalid.

      Interview Tip

      Complex numbers are rarely asked directly in interviews, but you may encounter them in signal processing or competitive math problems. Know how to extract .real and .imag values.

      Summary

      • complex() creates a complex number.
      • You can pass real and imaginary parts as numbers or a single valid string.
      • Access components with .real and .imag.

      Practice Problem

      Write a program that reads two numbers from the user and creates a complex number:

      real = float(input("Enter real part: "))
imag = float(input("Enter imaginary part: "))
z = complex(real, imag)
print("The complex number is:", z)

      Python Built-in Functions❯

      1. 1Python aiter() Function – Get Async Iterator in Python
      2. 2Python all() Function – Check If All Elements Are True
      3. 3Python anext() Function – Get Next Item from Async Iterator
      4. 4Python any() Function – Check if Any Element is True
      5. 5Python ascii() Function – Get ASCII Representation of Objects
      6. 6Python bin() Function – Convert Integer to Binary String
      7. 7Python bool() Function – Convert to Boolean
      8. 8Python breakpoint() Function – Add Debug Points in Your Code
      9. 9Python bytearray() Function – Create and Modify Binary Data
      10. 10Python bytes() Function – Create Immutable Byte Objects
      11. 11Python callable() Function – Check If Object Is Callable
      12. 12Python chr() Function – Get Character from Unicode Code Point
      13. 13Python classmethod() Function – Convert Method to Class Method
      14. 14Python compile() Function – Compile Source Code at Runtime
      15. 15Python complex() Function – Create Complex Numbers Easily
      16. 16Python delattr() Function – Delete Attribute from Object
      17. 17Python dict() Function – Create and Use Dictionaries Easily
      18. 18Python dir() Function – List Attributes of Objects
      19. 19Python divmod() Function – Quotient and Remainder in One Go
      20. 20Python enumerate() Function – Loop with Index Easily
      21. 21Python eval() Function – Evaluate Expressions from Strings
      22. 22Python exec() Function – Execute Dynamic Python Code
      23. 23Python filter() Function – Filter Items in a List
      24. 24Python float() Function – Convert to Floating Point Number
      25. 25Python format() Function – Format Strings Easily
      26. 26Python frozenset() Function – Create Immutable Sets
      27. 27Python getattr() Function – Access Object Attributes Dynamically
      28. 28Python globals() Function – Access Global Symbol Table
      29. 29Python hasattr() Function – Check If an Object Has an Attribute
      30. 30Python hash() Function – Generate Hash Values of Objects
      31. 31Python help() Function – Get Help on Python Functions, Classes, and Modules
      32. 32Python hex() Function – Convert Integer to Hexadecimal
      33. 33Python id() Function – Get Memory Address of an Object
      34. 34Python input() Function – Get User Input Easily
      35. 35Python int() Function – Convert to Integer
      36. 36Python isinstance() Function – Check Type of a Variable
      37. 37Python issubclass() Function – Check Class Inheritance
      38. 38Python iter() Function – Create an Iterator from Iterable
      39. 39Python len() Function – Get the Length of Strings, Lists, and More
      40. 40Python list() Function – Convert Data to a List
      41. 41Python locals() Function – Get Local Symbol Table as a Dictionary
      42. 42Python map() Function – Apply a Function to Each Element
      43. 43Python max() Function – Find the Largest Value
      44. 44Python memoryview() Function – Work With Binary Data Efficiently
      45. 45Python min() Function – Find the Smallest Value
      46. 46Python next() Function – Retrieve Next Item from an Iterator
      47. 47Python object() Function – Base Object Constructor Explained
      48. 48Python oct() Function – Convert Number to Octal
      49. 49Python open() Function – Read, Write, and Create Files Easily
      50. 50Python ord() Function – Get Unicode Code of a Character
      51. 51Python pow() Function – Raise a Number to a Power
      52. 52Python print() Function – Print Output to the Console
      53. 53Python property() Function – Create Managed Attributes
      54. 54Python range() Function – Generate Number Sequences Easily
      55. 55Python repr() Function – Get String Representation of an Object
      56. 56Python reversed() Function – Reverse Iterables Easily
      57. 57Python round() Function – Round Numbers to Nearest Integer or Decimal Places
      58. 58Python set() Function – Create a Set from Iterable
      59. 59Python setattr() Function – Dynamically Set Object Attributes
      60. 60Python slice() Function – Create Slice Objects for Lists and Strings
      61. 61Python sorted() Function – Sort Any Iterable Easily
      62. 62Python staticmethod() Function – Create Static Methods in Classes
      63. 63Python str() Function – Convert to String Easily
      64. 64Python sum() Function – Add Items of an Iterable
      65. 65Python super() Function – Call Parent Class Methods
      66. 66Python tuple() Function – Create a Tuple from Iterable
      67. 67Python type() Function – Get the Type of an Object
      68. 68Python vars() Function – View Object’s Attributes
      69. 69Python zip() Function – Combine Iterables Element-Wise
      70. 70Python __import__() Function – Dynamic Module Import
      71. 71Python str.format() – Format Strings Easily with Placeholders
      72. 72Python String format_map() – Format Strings with a Mapping

      Welcome to ProgramGuru

      Sign up to start your journey with us

      Support ProgramGuru.org❯

      You can support this website with a contribution of your choice.

      When making a contribution, mention your name, and programguru.org in the message. Your name shall be displayed in the sponsors list.

      PayPal

      UPI

      PhonePe QR

      MALLIKARJUNA M