3. Linear equations
4. Matrix determinant
5. Vector space
6. Special matrices
7. Eigenvalues and Eigenvectors
9. Matrix decomposition
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Python File | readline method
schedule Mar 5, 2023Last updated
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file.readline(~) method returns one line from the file and leaves a newline character
\n at the end of the string (omitted from the last line of the file).
The number of bytes from the line to return. Default is to read whole line.
One line from the file as a string.
To return the first line of the file as a string:
f = open("test.txt", "r")# Return the first linef.readline()'sample line 1\n'
Notice how the newline character
\n is included at the end of the string.
If we call
file.readline(~) consecutively, we will return consecutive lines from the files:
f = open("test.txt", "r")# Print first line from the fileprint(f.readline())# Print second line from the fileprint(f.readline())sample line 1sample line 2
Published by Isshin Inada
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Official Python Documentationhttps://docs.python.org/3/tutorial/inputoutput.html#methods-of-file-objects
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