Opening & Reading Files

Use open(), with, .read(), and .readlines() to read text files

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Reading a file

Use open() with the "r" mode to read a file. Pair it with with so the file closes automatically.

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

Two ways to read

Method	Returns	Use when
`file.read()`	One string with the full file	You need all the text at once
`file.readlines()`	A list — one string per line	You need to process lines individually

Each line from readlines() includes the newline character \n at the end. Use .strip() to remove it.

with open("report.txt", "r") as file:
    lines = file.readlines()
print(lines[0].strip())  # First line without newline

Instructions

Read a sales report file using both .read() and .readlines().

Open report.txt in read mode using with open("report.txt", "r") as file:. Inside the block, assign file.read() to content.
Call print(content.strip()) to print all content without trailing whitespace.
Open report.txt again using a second with statement. Inside the block, assign file.readlines() to lines.
Call print(len(lines)) to print the number of lines.

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# report.txt contains:
# Sales Report
# Q1: 15000
# Q2: 18500
# Q3: 21000

# Step 1: Open report.txt and read its full content into content

# Step 2: Print content using .strip()

# Step 3: Open report.txt again and read it as lines

# Step 4: Print the number of lines

Opening & Reading Files

Reading a file

Two ways to read

Instructions

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