kewords in python using 35 keywords.pptx

kewords in python using 35 keywords.pptx

• 1.
  keywords
• 2.
  keywords  Keywords inPython are reserved words that have special meaning and purpose in the language.  You cannot use them as variable names function names, or identifiers .  Why are keywords important?  They help Python understand the structure and logic of your code .
• 3.
  Rules About Keywords: Cannot be used as variable/function names.  Are case-sensitive  Fixed and predefined — can't be modified.
• 4.
   False awaitelse import pass  None break except in raise  True class finally is return  and continue for lambda try  as def from nonlocal while  assert del global not with  async elif if or yield
• 5.
  Basic Logic andControl Flow Keywords Keyword Purpose / Use False Boolean value representing false condition True Boolean value representing true condition None Represents a null or no value and Logical AND operator or Logical OR operator not Logical NOT operator if Begins a conditional block elif Else-if block in conditions else Executes if all if/elif conditions fail for Starts a loop over an iterable while Repeats a block while condition is true break Exits a loop early
• 6.
  Function, Class, Exception,and Scope Keywords Keyword Purpose / Use continue Skips to the next iteration of a loop pass A no-op (does nothing); used as a placeholder def Defines a function return Sends a value back from a function lambda Creates an anonymous function yield Used in generator functions to return values one by one import Imports a module from Imports specific part of a module as Gives a name/alias to module or exception class Defines a class try Starts a try block for error handling except Catches and handles exceptions
• 7.
  Advanced, Async, andMiscellaneous Keywords Keyword Purpose / Use finally Block that always executes after try/except raise Raises an exception manually assert Used for debugging; raises error if condition is false with Context manager (e.g., file handling) del Deletes variables or list elements global Declares a global variable in a function nonlocal Refers to a variable in outer (non-global) scope is Tests identity (whether two references point to the same object) in Checks if value is in a container async Declares a coroutine (asynchronous function) await Awaits result from an async function None (Repeated for completeness: represents no value)
• 8.
   # Checkif a number is positive or negative  num = -3  if num >= 0:  print("Positive number")  else:  print("Negative number") if, else, print
• 9.
   # Printnumbers until we find 5  for i in range(10):  if i == 5:  break  print(i) for, in, break
• 10.
   # Functionto add two numbers  def add(x, y):  return x + y  print("Sum:", add(4, 6)) def, return, print
• 11.
   # Skipeven numbers using continue  i = 0  while i < 5:  i += 1  if i % 2 == 0:  continue  print(i) while, continue, print
• 12.
   # Handledivision by zero  try:  result = 10 / 0  except ZeroDivisionError:  print("Cannot divide by zero!") try, except, print