Introduction Basic I/O Python
In Python, I/O stands for Input and Output, which are essential for interacting with users or other systems. Here's a simple overview of how Python handles these operations:
1. Input in Python:
The
input() function is used to take input from the user during program execution. It always returns the input as a string.Example : Basic Input :
name = input("Enter your name: ")
print("Hello, " + name + "!")
Example : Taking Numeric Input:
age = int(input("Enter your age: "))
print("You are", age, "years old.")
2. Output in Python:
The
print() function is used to display output on the screen. It can print strings, numbers, or any other object.print("Welcome to Python Programming!")
Printing Multiple Items:
name = "Alice"
age = 25
print("Name:", name, "Age:", age)
3. String Formatting for Output:
You can format your output using different methods.
- Example : f-strings (Python 3.6+):
name = "John"
age = 30
print(f"My name is {name} and I am {age} years old.")
Example : str.format()method:
print("My name is {} and I am {} years old.".format(name, age))
- Example:
%formatting:
print("My name is %s and I am %d years old." % (name, age))
4. File Input and Output:
Python also allows you to read from and write to files.
- Example: Write a to file
with open("example.txt", "w") as file:
file.write("Hello, this is a test file.\n")
file.write("This is the second line.")
- Example : Reading from a file
with open("example.txt", "r") as file:
content = file.read()
print(content)
5. Common Use Cases:
- Taking multiple inputs in one line:
a, b = input("Enter two numbers: ").split()
print("First number:", a, "Second number:", b)
- Reading and writing lists:
numbers = list(map(int, input("Enter numbers separated by space: ").split()))
print("Numbers:", numbers)
Conclusion:
Input ( input()): Takes input from the user.Output ( print()): Displays output to the screen.File I/O: Reads from and writes to files for persistent storage.
Hope this chapter is helpful for you , now i want to talking about next chapter is really very important chapter, all the best for your next chapter.
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