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rphadtarerphadtare
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2024/03/14 - Adding variable and data type demo python code
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‎concepts/DataTypeDemo.py

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# This file gives demo about different data types
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# Numeric data type
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# Int, Float, Complex data type
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def _numeric_data_type_demo() -> None:
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print("Inside _numeric_data_type_demo")
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a = 10
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b = 10.5
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c = 1 + 2.3j
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print("Data type of a ", type(a), " and valud of a ", a)
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print("Data type of b ", type(b), " and valud of b ", b)
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print("Data type of c ", type(c), " and valud of c ", c)
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print("c.real ", c.real, " c.imag", c.imag)
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print("Adding 1 to c.real and adding 2 to imag part of c")
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c = c.__add__(1 + 2j)
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print("Value of c post changes ", c)
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print("**" * 25)
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_numeric_data_type_demo()
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# Sequence data type
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# String, List, tuple type
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def _string_data_type_demo() -> None:
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print("Inside _string_data_type_demo")
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_my_str = 'Hello'
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_my_str1 = " World"
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_my_str2 = """!!!"""
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# concat strings
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_final_str = _my_str + _my_str1 + _my_str2
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print("Final string ", _final_str)
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# slice operation, here string index will start from 0 and traverse till 5-1 index position i.e. 4
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print("_final_str[0:5] ", _final_str[0:5])
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# to reverse string
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print("Reverse string ", _final_str[::-1])
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# update string at specific position
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# strings are immutable hence they can modify using below way only
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_new_str = "RM"
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print("Before update char at 2nd position : ", _new_str, " and id : ", id(_new_str))
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_new_str = _new_str[0:1] + "A" + _new_str[-1]
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print("Post update char at 2nd position : ", _new_str, " and id : ", id(_new_str))
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# Repetition factor
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print("**" * 25)
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_string_data_type_demo()
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def _list_data_type_demo() -> None:
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print("Inside _list_data_type_demo")
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_my_list = [1, "Rohit", 2, "Pooja"]
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print("List : ", _my_list)
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# slice operation
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print("List slice [0:2] : ", _my_list[:2])
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# to reverse list
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print("Reverse list ", _my_list[::-1])
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# concat with another list
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print("Another List : ", [3, "Ram"])
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_my_list = _my_list + [3, "Ram"]
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print("Concat List : ", _my_list)
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# add element at specific position
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_my_list.insert(2, 4)
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print("Inserting element 4 at 2nd position ", _my_list)
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# removing element from specific position
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_my_list.pop(2)
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print("Removing element from 2nd position ", _my_list)
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print("**" * 25)
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_list_data_type_demo()
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def _tuple_data_type_demo() -> None:
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print("Inside _tuple_data_type_demo")
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_my_tuple = (1, "Rohit", 31, 25000)
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print("_my_tuple : ", _my_tuple)
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# slice
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print("Tuple slice [0:2] : ", _my_tuple[:2])
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# get element at 3rd position
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print("get element at 4th position : ", _my_tuple[3])
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# iterate through tuple
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print("Iterate through tuple")
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for i in _my_tuple:
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print(i)
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print("**" * 25)
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_tuple_data_type_demo()
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def _dictionary_data_type_demo() -> None:
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_my_map = {1: "Rohit", 2: "Pooja", 5: "Virat"}
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print("_my_map", _my_map)
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print("Get value of key 5 : ", _my_map[5])
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print("Get all keys : ", _my_map.keys())
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print("Get all values : ", _my_map.values())
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# check if key is present or not
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print("Check key 3 present or not : ", _my_map.__contains__(3))
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_my_map.pop(2)
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print("Post Removal of key 2 : ", _my_map)
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_my_map.update({1: "Pooja"})
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print("Post updating value of key 1 : ", _my_map)
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print("**" * 25)
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_dictionary_data_type_demo()
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def _set_data_type_demo() -> None:
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set1 = {1, 1, "Rohit"}
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print("set1 ", set1)
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print("**" * 25)
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_set_data_type_demo()

‎concepts/VariableDemo.py

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# This file gives demo about different types of variables
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# and there usages
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print("Welcome to python demo!!!")
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# local variable
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def _local_variable_demo() -> None:
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print("Inside _local_variable_demo")
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x = 10
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print("Value of x ", x)
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return None
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_local_variable_demo()
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name = "Rohit"
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# global variable
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def _global_variable_demo() -> None:
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print("Inside _global_variable_demo")
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global name
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name += " Phadtare"
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print("Value of name ", name)
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return None
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_global_variable_demo()
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# non local variable
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def _non_local_variable_demo() -> None:
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print("Inside _non_local_variable_demo")
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num = 10
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print("value of nonlocal variable before calling _inside_func ", num)
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def _inside_func() -> None:
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num1 = 20
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nonlocal num
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num += num1
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_inside_func()
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print("value of nonlocal variable post execution of _inside_func ", num)
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_non_local_variable_demo()
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# Object Identity demo
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a = 50
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b = a
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print("ID of a ", id(a))
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print("ID of b ", id(b))
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a = 100
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print("ID of a after assigning new value ", id(a))
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