Python How to Read a File Between Two Lines

Welcome! The new line character in Python is used to mark the end of a line and the showtime of a new line. Knowing how to use it is essential if you want to impress output to the console and work with files.

In this article, you volition learn:

• How to identify the new line character in Python.
• How the new line graphic symbol can be used in strings and print statements.
• How you lot can write print statements that don't add a new line character to the end of the cord.

Allow'south begin! ✨

🔹 The New Line Character

The new line character in Python is:

It is made of 2 characters:

• A backslash.
• The letter n.

If you come across this grapheme in a string, that ways that the current line ends at that point and a new line starts correct after information technology:

Y'all can too use this graphic symbol in f-strings:

                >>> print(f"Hullo\nWorld!")              

🔸 The New Line Graphic symbol in Impress Statements

By default, print statements add a new line character "behind the scenes" at the end of the string.

Similar this:

This occurs because, according to the Python Documentation:

The default value of the end parameter of the built-in impress function is \northward, then a new line character is appended to the string.

💡 Tip: Append means "add to the end".

This is the function definition:

Discover that the value of terminate is \n, so this volition be added to the finish of the cord.

If you only use one impress argument, you won't notice this because only one line will be printed:

But if you employ several print statements one later on the other in a Python script:

The output volition be printed in carve up lines because \n has been added "behind the scenes" to the cease of each line:

🔹 How to Print Without a New Line

We can change this default beliefs by customizing the value of the end parameter of the impress function.

If we use the default value in this example:

We see the output printed in ii lines:

But if we customize the value of end and gear up information technology to " "

A space will exist added to the finish of the string instead of the new line character \n, so the output of the 2 print statements will be displayed in the same line:

You can use this to print a sequence of values in one line, like in this example:

The output is:

💡 Tip: We add a conditional argument to make sure that the comma will not exist added to the last number of the sequence.

Similarly, we can use this to print the values of an iterable in the same line:

The output is:

🔸 The New Line Character in Files

The new line character \northward is likewise found in files, but it is "hidden". When you see a new line in a text file, a new line graphic symbol \n has been inserted.

You can check this by reading the file with <file>.readlines(), like this:

                with open("names.txt", "r") as f:     impress(f.readlines())              

The output is:

As you tin can see, the first three lines of the text file end with a new line \n graphic symbol that works "behind the scenes."

💡 Tip: Find that merely the last line of the file doesn't stop with a new line character.

🔹 In Summary

• The new line character in Python is \n. Information technology is used to indicate the end of a line of text.
• You can print strings without calculation a new line with terminate = <character>, which <character> is the character that will be used to divide the lines.

I really hope that yous liked my article and found it helpful. At present y'all can work with the new line character in Python.

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Source: https://www.freecodecamp.org/news/python-new-line-and-how-to-python-print-without-a-newline/

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