Found 10784 Articles for Python

How to process escape sequences in a string in Python?

Rajendra Dharmkar
Updated on 11-Aug-2023 10:38:19

2K+ Views

In Python, escape sequences are special characters that are used to represent certain characters that cannot be easily typed or printed. They are typically represented with a backslash (\) followed by a character that represents the special sequence. For example, the newline character () is used to represent a line break in a string. Here are some common escape sequences used in Python: : newline character \t: tab character ': single quote character ": double quote character In Python, we can process escape sequences in a string using backslashes (\) followed by a character or a combination of characters. Here ... Read More

How to remove empty strings from a list of strings in Python?

Tarun Chandra
Updated on 07-Dec-2022 08:00:42

6K+ Views

In this article, we are going to find out how to remove empty strings from a list of strings in Python.. The first approach is by using the inbuilt method filter(). This method takes input from a list of strings and removes empty strings and returns the updated list. It takes None as the first parameter because we are trying to remove empty spaces and the next parameter is the list of strings. The built-in Python function filter() enables you to process an iterable and extract those elements that meet a specified condition. This action is frequently referred to as ... Read More

What is the most elegant way to check if the string is empty in Python?

Rajendra Dharmkar
Updated on 11-Aug-2023 14:58:50

3K+ Views

In Python, an empty string is a string with no characters in it. It is represented by a pair of single quotes '' or a pair of double quotes "". An empty string is different from a null value, which is a special value representing the absence of any object. An empty string can be used in various ways, such as initializing a string variable or checking if a string is empty. The most elegant way to check if a string is empty in Python is to simply use the Boolean evaluation of the string. Here are some examples: Using ... Read More

How would you convert string to bytes in Python 3?

Rajendra Dharmkar
Updated on 30-Sep-2019 07:19:27

181 Views

To convert string to bytes in Python 3, you can use the encode() function from the string class. For example,>>> s = u"HellΘ WΘrld" >>> s.encode('utf-8') 'Hell\xce\x98 W\xce\x98rld'

How to check if multiple strings exist in another string in Python?

Tarun Chandra
Updated on 07-Dec-2022 07:58:38

7K+ Views

In this article, we are going to see how to check if multiple strings exist in another string in Python. Imagine a scenario where we must satisfy 50 requirements in order to work. To determine whether conditions are true, we typically employ conditional statements (if, if−else, elif, nested if). However, with so many conditions, the code grows long and unreadable due to the excessive use of if statements. Python's any() function is the only option for such circumstances, thus programmers must use it. The first approach is by writing a function to check for any multiple strings’ existence and then ... Read More

How to create a long multi-line string in Python?

Tarun Chandra
Updated on 07-Dec-2022 07:53:11

9K+ Views

In this article, we are going to focus on how to create a long multi−line string in Python. The first approach is by using triple quotes, we should add a triple quote then we can add separate line inside the quotes, the multi-line string is created. Using triple quotes in Python, it is possible to span strings across many lines. It can also be applied to lengthy code comments. Triple quotes can also contain special characters like TAB, verbatim, or NEWLINES. As the name would imply, the syntax consists of three single or double quotes placed consecutively. Example In the ... Read More

How do I execute a string containing Python code in Python?

Tarun Chandra
Updated on 07-Dec-2022 07:49:43

16K+ Views

In this article, we are going to find out how to execute a string containing Python code in Python. To execute a string containing Python code we should take the input string as multi-line input using triple quotes, then we will use the inbuilt function exec(). This will take a string as input and returns the output of the code that is present inside the string. The exec() function is used to execute Python programmes dynamically. These programmes can be either strings or object code. If it's a string, it's translated into a series of Python statements that are then ... Read More

How to get a function name as a string in Python?

Tarun Chandra
Updated on 07-Dec-2022 07:46:38

15K+ Views

In this article, we are going to find out how to get a function name as a string in Python. The first approach is by using the function property __name__. This property will return the name of the function when the property is called. This is only present in Python 3.x version. Python does not have a main() function, so when the command to run a Python program is given to the interpreter, the level 0 indented code will be executed. Before that, though, it will define a few unique variables. One such unique variable is __name__. The interpreter sets ... Read More

How can we change the id of an immutable string in Python?

Rajendra Dharmkar
Updated on 10-Aug-2023 12:51:49

556 Views

In Python, a string is a sequence of characters. It's a type of data that represents text values, such as words, sentences, or even entire documents. Strings in Python are enclosed in either single quotes ('...') or double quotes ("..."), and can include alphanumeric characters, symbols, whitespace, and more. As an immutable object, a string's ID cannot be changed in Python. As long as a new string that has the same value as the original string (valid only for small string literals), the ID of both the strings will remain same. In Python, small string literals (strings with only ... Read More

How to generate random strings with upper case letters and digits in Python?

Rajendra Dharmkar
Updated on 10-Aug-2023 21:06:48

756 Views

You generate random strings with upper case letters and digits in Python. Here are three different ways to do it: Using random.choices() and string.ascii_uppercase In this method, we will use the random.choices() function to randomly choose characters from the string.ascii_uppercase and string.digits strings to generate a random string. Example We first import the random and string modules, which we will use to generate random characters and create strings, respectively. We define the length of the random string we want to generate (in this example, it's 10). We define the possible characters that can be used to create the random string, ... Read More

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