a. stateTaxRate – This is a good variable name. b. txRt – This is a legal variable name, but cryptic.

Variable names always begin with a lowercase letter. If a name consists of multiple words, the first letter of all words except the first is capitalized, for example, endOfLineMarker , totalBill . Although legal, variable names never contain the underscore (unless they are constants) or the dollar sign.

A good variable name should: Be clear and concise. Be written in English. A general coding practice is to write code with variable names in English, as that is the most likely common language between programmers. Thus, variable names such as muuttuja (which is also not a good name on other levels) should be avoided.

a. stateTaxRate – A good variable name because it represents what it holds, the state sales tax rate, without being too wordy. txRt – A bad variable name because while short and simple, it is too hard to understand what the variable represents.

Officially, variable names in Python can be any length and can consist of uppercase and lowercase letters ( A-Z , a-z ), digits ( 0-9 ), and the underscore character ( _ ). An additional restriction is that, although a variable name can contain digits, the first character of a variable name cannot be a digit.

Variable name – Identifiers The name of the variable must always start with either a letter or an underscore (_). For example: _str, str, num, _num are all valid name for the variables. 2. The name of the variable cannot start with a number.

Variables make code more than a static set of instructions. They allow logic to occur, enabling developers to measure time, analyze data, and customize the program to the user. Variables are so important to the code that they deserve a good name that accurately describes their purpose.

3 Answers. You are correct in naming variables as short as you can while retaining enough meaning to be able to describe what the variable does by just looking at its name. No, the length of a variable name has absolutely nothing to do with performance.

Each variable is named so it is clear which variable is being used at any time. It is important to use meaningful names for variables: The name given to each variable is up to the programmer, but ideally a variable name should have meaning, ie it should reflect the value that it is holding.

This is known as assigning a value to a variable — i is assigned the value 9. It means that the space in the computer’s memory associated with i now holds this value. The first time a variable is assigned a value, it is said to be initialised. The = symbol is known as the assignment operator.

When naming a function, variable or class, you should keep the following things in mind:

1. Choose a word with meaning (provide some context)
2. Avoid generic names (like tmp )
3. Attach additional information to a name (use suffix or prefix)
4. Don’t make your names too long or too short.
5. Use consistent formatting.

One of the more universal, yet simple rules is: Function names should be verbs if the function changes the state of the program, and nouns if they’re used to return a certain value. One more important thing to do when writing a library is to use the same word to describe the same action every time.

Here are a few general guidelines to keep in mind when naming methods: Start the name with a lowercase letter and capitalize the first letter of embedded words. Don’t use prefixes. See Typographic Conventions.

Tips for writing your name in binary code

1. Each letter contains 8 binary digits.
2. Capital letters always start with 010.
3. Lowercase letters start with 011.
4. A space is written as 00100000.

Make sure to put a space in between each binary code and use the correct binary code for upper or lower case letters. For example, the binary combination for the name “Paul” would be: 01010000 01100001 01110101 01101100. Repeat to write your last name in binary numbers.

Find the 8-bit binary code sequence for each letter of your name, writing it down with a small space between each set of 8 bits. For example, if your name starts with the letter A, your first letter would be 01000001.

ASCII – Binary Character Table

The word “hello” in binary code is: 0110100001100101011011000110110001101111. By dividing this into eight-digit segments it is easier to see the binary byte corresponding to each letter: 01101000 01100101 01101100 01101100 01101111.

Use the ASCII code to write your first name or nickname in binary numbers beginning with an uppercase letter and continuing with lowercase letters. Put the letters of your name in the first column.