name. Once a value is entered, the program will print the greeting message with the input value.

 

Data Types in Python

There are three main data types in Python: numbers, strings, and booleans.

 

Numbers - This includes integers and floating-point numbers.

Strings - This includes textual data.

Booleans - This includes True and False values.

Converting Data Types in Python

Python has several built-in functions for converting the types of our variables. For example, we have the int() function for converting a value to an integer:

 

birth_year = "1982"age = 2020 - int(birth_year)print("You are " + str(age) + " years old.")

In the above example, we use the int() function to convert the birth_year string to an integer so we can subtract it from the current year.

 

We also have the float() function for converting a value to a float:

 

num = "10.5"float_num = float(num)print(float_num)

In the above example, we use the float() function to convert the num string to a floating point number.

you're going to see 1 on the terminal because the index is 1.

print("Hello World"[1]) # Output: e

The float function is used to convert a string to a float value.

first = float(input("Enter the first number: "))

We can also change this expression to first + second, which is another way to write this piece of code.

The lower method is used to convert a string to lowercase or to find a character or a sequence of characters.

string = "Hello World"print(string.lower()) # Output: hello worldprint(string.find('o')) # Output: 4print(string.replace('o','a')) # Output: Hella Warld

The in operator can be used to check if a string contains a character.

string = "Python is a programming language for beginners."print('language' in string) # Output: True

Python has various arithmetic operators that we can use, such as addition (+), subtraction (-), multiplication (*), and division (/).

print(10 + 3) # Output: 13

We also have an augmented assignment operator in Python that means incrementing a variable by a value.

x = 5x += 3 # Output: 8

Operator precedence in Python is similar to math, but we can always use parentheses to change the order of operations.

x = 10 + 3 * 2 # Output: 16

Multiplication and division have a higher order, so they are evaluated first. That's why the answer is 16.

x = 10 + 3 / 2print(x) # Output: 11.5

When we print x, we get 11.5.

x += 3print(x) # Output: 14.5

When we run x += 3, we get 14.5 as the result. When we run x == 13, it will store False in the x variable.

x = 1000 # Output: 1000

Write a function find_decrypted_words() that takes a file name as parameter, reads that text file and decrypts all of the words by using previously created decode_string() function (in part-4). The function will print perfectly decrypted words and the number of deficient ones. If all characters converted successfully it means that the string is decrypted perfectly (i.e. no "?" in decrypted string).

Write a Python statement that calls the above defined function with the file "encryptedwords.txt".

Part-5:

Decoding encrypted words...

Decoded words:

ALERT

TREX

33  number of words cannot decrypted succesfully