What Does [:-1] In Python Mean And Why Use It?
What does [:-1] in Python actually do and why would you want to use it? [:-1] in Python is a slice operation used on strings or lists and captures all contents of the string or list except for the last character or element. Here are some examples demonstrating the operation of this code with strings: 1 2 3 >>> my_string = "Why?" >>> my_string[:-1] 'Why' As you can see from the simple code example above a variable my_string contains a string that ends with a question mark. By using the [:-1] slice operation it outputs the whole string except for the last character in the string. ...