Read File In Python

Method read() reads at most size bytes from the file and read hits the end of the file before obtaining size bytes, then it reads only available bytes.

read_file.txt input file

input file.txt
In the below program example, we are opening a text file with read mode, and read mode has this read method that read the entire file content from beginning to end. The open method accepts two parameters file path and file mode to open.
def read_file_content(filename):
    file = open(filename, 'r+')
    file_data = file.read()
    print(file_data)

filename = "input_file.txt"
read_file_content(filename)

Output:

output data


Python Loop Programs with Solutions

Python Practice › Loop Programs

Python Loop Programs with Solutions

90 programs75 easy14 medium1 hard

90 loop programs from counting and digit tricks to star and letter patterns. They practise for, while, range(), break, continue and nested loops; every solution is explained and shows its real output.

Before you start

Read the Loops: for & while lesson first if the topic is new to you.

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Python Dictionary Programs with Solutions

Python Practice › Dictionary Programs

Python Dictionary Programs with Solutions

94 programs91 easy3 medium0 hard

94 dictionary programs: adding, removing and renaming keys, merging, sorting by key or value, counting with dictionaries, grouping, inverting, and working with nested dictionaries and lists of dictionaries. Every solution is explained with its real output.

Before you start

Read the Dictionaries lesson first if the topic is new to you.

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Python List Programs with Solutions

Python Practice › List Programs

Python List Programs with Solutions

100 programs93 easy7 medium0 hard

100 list programs, from sums and reversing to sublists, de-duplication and run-length decoding. Lists are Python’s most used data structure, and these exercises appear in most Python interviews. Every solution is explained and shows its real output.

Before you start

Read the Lists and List Comprehension lesson first if the topic is new to you.

All programs