Flow Of Control - Python

Conditional

• If Else

      if (condition):
          # statement
      elif (condition):
          # statement
      else:
          # statement
  

• Shorthand If Else

      print("value1") if condition else print("value2")
      print("value1") if condition1 else print("value2") if condition2 else print("value3")
  

Loop

• For
  • Unpack key-value pair of dictionary into 2 varNames

        for key, value in varD.items():
            # statement
    

  • Unpacks sequence pair into two varNames

        for value1, value2 in sequence:
            # statement
    

  • value runs in Sequence

        for value in sequence:
            # statement
    

  • Loop With else

        for value in sequence:
            # statement
        else:
            # statement
    

• Range

      for varName in range(N): # From 0 to N-1
          print(varName)
      for varName in range(N1:N2):  # From N1 to N2-1
          print(varName)
      for varName in range(N1:N2:N3):  # From N1 to N2-1 adding N3
          print(varName)
  

• While

      while (condition):
          # statement runs till condition is true
      else:
          # Else runs when condition becomes false
  

• break => Leaves the Loop
• continue => Leaves the iteration
• Enumerate Function

      for index, element in enumerate(sequence):
          # statement
      for index, element in enumerate(sequence, start=N):
          # Start the index with "N"
  

Match-Case

    match varName:
        case value1: # Pattern
            # Statement
        case value2 if condition: # Pattern with Condition
            # Statement
        case _ if condition: # Default case with Condition
            # Statement
        case _: # Default Case
            # Statement