Strings – you use it in every program, just like any other programming language. Learn about Strings in Python and how to manipulate them in the Pythonic way.
`”banana”.find(“pear”)` returns `-1` when the text is absent. I’m fascinated that a failed search has a clear result, while `-1` can still act as a valid slice position. You can separate the idea of a text fragment from the operation…
The call `'{:.2f}’.format(12.3456)` returns the string `’12.35’`. I find that pairing useful: the format string keeps the display rule beside its input. You can understand the returned text by looking at the rule inside the format expression. You can also…
Calling `”Python python PYTHON”.replace(“python”, “Ruby”)` changes only the lowercase match. I appreciate the `count` argument because it caps how many matches change. Pass the old and new text to `str.replace()` and check the returned string. Compare that returned string with…
Debug prints all repeat the same chore, because the variable name gets typed once as a label and once as the value. The f-string shorthand prints both from a single expression, so the label can never drift out of sync…
Every list of strings eventually needs to become one string, and the line that does it reads backwards. The separator calls the method while the list supplies the items, so a comma-joined row comes out as a one-liner once you…
I ran into this problem during a data migration when a colleague handed me a CSV full of product codes like “SKU-4829-A” and “ORD-1034-B” — and I needed to pull out just the numbers for validation. Manual extraction was not…
Clearly formatting Strings, in any language is a crucial aspect, as it influences how developers represent and display data. In Java, we are offered with an in-built method known as “String.format”. Likewise in Python, we have the ‘%’ operator, used…
String formatting is a very essential element of Python programming. Usually, we get strings that are not completely in the format that we want them to be in. Converting the string in the desired format is called string formatting. To…
The ASCII and Non-ASCII characters represent any symbol, alphabet, or digits in a particular format. The definite set of symbols is assigned to 128 unique characters in a Python language known as ASCII characters. In Python language, both ASCII and…
The curly braces are used everywhere in Python. Most of the time, you can see these curly braces {} during dictionary, or set initialization. The basic syntax of the dictionary that contains key-value pairs is enclosed within this curly braces…