Python string empty line

How to print an empty line in Python

An empty line is a blank line that is composed of spaces, tab spaces. In this tutorial, you will be learning how to print an empty line in Python programming language, Python provides various alternative methods in printing an empty line unlike other languages, we shall see the different methods in which an empty line can be printed. The following methods shown below is with respect to python3.x.

Method 1: Using the print function – Print an empty line in Python

The code given above can further be understood easier with an example given below:

print("Hello World") print() print("I am a Python Programmer")

Output: Hello World I am a Python Programmer

Method 2: print function with single quotes (‘ ‘) – Print an empty line in Python

The code given above can further be understood easier with an example given below:

print("Hello World") print('') print("I am a Python Programmer")

Output: Hello World I am a Python Programmer

Method 3: print function with double quotes (“”) – Print an empty line in Python

The code given above can further be understood easier with an example given below:

print("Hello World") print("") print("I am a Python Programmer")

Output: Hello World I am a Python Programmer

Method 4: print function with newline character (\n)

Description:

From the above code the newline character is enclosed within single quotes (‘ ‘) but can also be enclosed within the double quotes(” “). Whereas the above code will result in an error if the newline character is neither enclosed with the single quotes(‘ ‘) nor the double quotes(” “).

The code given above can further be understood easier with an example given below:

print("Hello World\n") print("I am a Python Programmer")

Output: Hello World I am a Python Programmer

Thus, the above methods can give us different ways to allow us to print an empty string.

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Print blank line in Python

The print() function can display some message or output in Python. Sometimes, the final result can be congested and unclear due to a need to display multiple or long outputs.

What is a blank line in Python?

We can use a blank line to display the final output in a clean, understandable way. A blank line is an empty line between two messages. The \n character produces a newline in Python.

We will understand how to print blank lines in this tutorial.

Ways to print blank line in Python

Using an empty print() function

In Python, multiple uses of the print() function can display the output in different lines.

See the following example.

This is because the print() function has a parameter end , which is \n by default. The end parameter adds this character to the end of the output. So, a blank line can be displayed using an empty print() function.

This is the second message

Further reading:

Python print without newline

Remove newline from the list in Python

Using the print() function with newline character

In the print() function, we can add an empty line between messages using the newline character \n within the function. We will use the newline character twice to add a blank line between two messages.

This is the second message

Using the print() function with an empty string

We can specify an empty string using single quotes in the print() function to display a blank line.

This is the second message

Similarly, we can specify an empty string using double quotes in the print() function to display a blank line.

This is the second message

Using the print() function with the sep parameter

The sep parameter in the print() function specifies the character that separates two values in Python. Its default value is blank whitespace.

If we change this to two newline characters \n , we can add a blank line between values.

This is the second message

Ways to print multiple blank lines in Python

Using the print() function with multiple newline characters

As discussed earlier, we can use the newline character \n to add a blank line between messages in Python. We can use it multiple times to display multiple blank lines.

This is the second message

Using the print() function with multiplication operator

Another way to achieve this is by using the multiplication operator * . We multiply the newline character \n the required number of times to display multiple blank lines.

This is the second message

Conclusion

We have explained and discussed different methods to print blank line in Python in this article. Such blank lines can help in displaying a clean output that is readable and understandable.

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Python string empty line

Last updated: Feb 22, 2023
Reading time · 4 min

# Check if a line is Empty in Python

To check if a line is empty:

1. Open the file in reading mode.
2. Use the file.readlines() method to get the lines in the file.
3. Use the line.strip() method to check if the line is empty.

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# ✅ check if a line is NOT empty with open('example.txt', 'r', encoding="utf-8") as f: lines = f.readlines() for line in lines: if line.strip(): print('The line is NOT empty ->', line) else: print('The line is empty') print('------------------------------------------') # ✅ check if a line is empty with open('example.txt', 'r', encoding="utf-8") as f: lines = f.readlines() for line in lines: if line.strip() == "": print('The line is empty') else: print('The line is NOT empty', line) 

We used the with statement to open the file in reading mode.

The statement automatically takes care of closing the file for us.

We used the f.readlines() method to get a list of the lines in the file.

The str.strip method returns a copy of the string with the leading and trailing whitespace (including newline characters) removed.

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print(repr('\n'.strip())) # 👉️ '' print(repr(' '.strip())) # 👉️ '' 

The method doesn’t change the original string, it returns a new string. Strings are immutable in Python.

# Checking if a line in a file isn’t empty

The first example checks if each line isn’t empty.

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with open('example.txt', 'r', encoding="utf-8") as f: lines = f.readlines() for line in lines: if line.strip(): print('The line is NOT empty ->', line) else: print('The line is empty') 

If the str.strip() method returns a truthy value (not an empty string), then the line isn’t empty.

To check if a line is empty, compare the result of calling str.strip() with an empty string.

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with open('example.txt', 'r', encoding="utf-8") as f: lines = f.readlines() for line in lines: if line.strip() == "": print('The line is empty') else: print('The line is NOT empty', line) 

If the str.strip() method returns an empty string, then the line is empty.

This approach returns True if the line contains whitespace characters or newlines.

If you only want to check for newline characters, use the in operator.

# Check if a line is Empty using the in operator

This is a three-step process:

1. Open the file in reading mode.
2. Use the file.readlines() method to get the lines in the file.
3. Use the in operator to check if the line is empty.

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# ✅ check if a line is NOT empty with open('example.txt', 'r', encoding="utf-8") as f: lines = f.readlines() for line in lines: if line not in ['\n', '\r', '\r\n']: print('The line is NOT empty ->', line) else: print('The line is empty') print('------------------------------------------') # ✅ check if a line is empty with open('example.txt', 'r', encoding="utf-8") as f: lines = f.readlines() for line in lines: if line in ['\n', '\r', '\r\n']: print('The line is empty') else: print('The line is NOT empty', line) 

The in operator tests for membership. For example, x in l evaluates to True if x is a member of l , otherwise, it evaluates to False .

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