file = open("filename.txt", "mode")

file = open("sample.txt", "r")
content = file.read()
print(content)
file.close()

file = open("sample.txt", "r")

for line in file:
    print(line)

file.close()

file = open("sample.txt", "w")
file.write("Hello, Python!")
file.close()

file = open("sample.txt", "a")
file.write("\nWelcome!")
file.close()

import csv

import csv

with open("students.csv", "r") as file:
    reader = csv.reader(file)

    for row in reader:
        print(row)

['Name', 'Age']
['Alice', '20']
['Bob', '21']

import csv

with open("students.csv", "w", newline="") as file:
    writer = csv.writer(file)

    writer.writerow(["Name", "Age"])
    writer.writerow(["Alice", 20])
    writer.writerow(["Bob", 21])

rows = [
    ["John", 22],
    ["Emma", 19],
    ["David", 21]
]

with open("students.csv", "w", newline="") as file:
    writer = csv.writer(file)
    writer.writerows(rows)

import csv

with open("students.csv", "r") as file:
    reader = csv.DictReader(file)

    for row in reader:
        print(row["Name"], row["Age"])

with open("file.txt", "r") as file:
    content = file.read()
    print(content)

file = open("file.txt", "r")
content = file.read()
file.close()

with open("file.txt", "r") as file:
    content = file.read()

import csv

# Write to a text file
with open("message.txt", "w") as file:
    file.write("Hello World!")

# Read the text file
with open("message.txt", "r") as file:
    print(file.read())

# Write CSV data
with open("marks.csv", "w", newline="") as file:
    writer = csv.writer(file)
    writer.writerow(["Name", "Marks"])
    writer.writerow(["Alice", 95])
    writer.writerow(["Bob", 88])

# Read CSV data
with open("marks.csv", "r") as file:
    reader = csv.reader(file)
    for row in reader:
        print(row)