Chris
ROT13 is a simple encryption method. It shifts each character of the clear text string 13 positions forward in the alphabet. This Python one-liner does ROT13 encryption for you: Don’t worry if this seems confusing. We’ll explain it all in detail below! Note: the variable cleartxt refers to the string you want to encode. It … Read more
The backslash escape character ‘\’ is a special Python string character that is usually followed by an alphabetic character. For example, the tabular whitespace ‘\t’ and newline ‘\n’. In regular expressions, you can use the single escape to remove the special meaning of regex symbols. For example, to match the dot or asterisk characters ‘.’ … Read more
Problem Formulation Say, you’ve written a number of unit tests using the unittest module in Pyhton. How can you disable specific unit tests temporarily? In other words: How to skip a unit test in Python’s unittest module? Example: Given the following three unit tests. How to disable tests 1 and 2? Method 1: Skip Test … Read more
Problem Formulation Given a string s. How to get a Boolean value that indicates whether all characters in the string are lowercase? Example: Say, you ask the user for input and you want to check whether all input characters are lowercase for further processing: If the user types in ‘alice’, the function should return True … Read more
Fills the string from the left with “0” characters. Minimal Example As you read over the explanations below, feel free to watch our video guide about this particular string method: Syntax and Explanation str.zfill(width) Fills the string from the left with “0” characters. width – the length of the resulting string. Although it works for … Read more
Returns an uppercase string version. Minimal Example As you read over the explanations below, feel free to watch our video guide about this particular string method: Syntax and Explanation str.upper() Returns an uppercase string version (copy) whereas each character is replaced with its uppercase variant: Application String Upper – Ignoring String Case An application of … Read more
Returns a translated string. Minimal Example As you read over the explanations below, feel free to watch our video guide about this particular string method: Syntax and Explanation str.translate(table) Returns a translated string that is a copy of the original string whereas only the character translations defined in the table argument have been applied to … Read more
Python’s built-in string.title() method returns a new string that has uppercase first characters for each word. Minimal Example As you read over the explanations below, feel free to watch our video guide about this particular string method: Syntax and Explanation str.title() Returns a new string with uppercase first characters of each word. 💡 Info: A … Read more
Swaps lowercase to uppercase characters and vice versa. Minimal Example As you read over the explanations below, feel free to watch our video guide about this particular string method: Syntax and Explanation str.swapcase() Swaps lowercase to uppercase characters and vice versa. Note: Although you may expect that swapcase() is its own inverse function, this is … Read more
Trims whitespaces on the left and right and returns a new string. Minimal Example As you read over the explanations below, feel free to watch our video guide about this particular string method: Syntax and Explanation str.strip([chars]) Trims whitespaces on the left and right and returns a new string. chars – optional. The argument defines … Read more
Returns whether the string starts with a given value or not (True or False). Minimal Example As you read over the explanations below, feel free to watch our video guide about this particular string method: Syntax and Explanation str.startswith(prefix[, start[, end]]) Returns whether the string ends with a given value or not (True or False). … Read more
Splits the string at line breaks such as ‘\n’ and returns a split list of substrings (i.e., lines). Minimal Example As you read over the explanations below, feel free to watch our video guide about this particular string method: Syntax and Explanation str.splitlines([keepends]) Splits the string at line breaks such as ‘\n’ and returns a … Read more