starspax.blogg.se - First 100 prime numbers python list comprehension

Since the output list should contain zero as well, the answer to this question is. What is the list comprehension equivalent for? (including zero)Ĭlarification: The required list comprehension will print a whole number, less than 20, provided that the number is even. Ĭlarification: The required list comprehension will print the numbers from 1 to 12, each raised to 2. Write a list comprehension to produce the list. What is the list comprehension equivalent for: list(map(lambda x:x**-1, ))?Ĭlarification: The output of the function list(map(lambda x:x**-1, )) is and that of the list comprehension ] is. Hence the required list comprehension is. A) ī) Ĭ) ĭ) Ĭlarification: The code shown above prints the value ‘i’ only if it satisfies the condition: int(i*0.5) is equal to (i*0.5). Using List Comprehensions EffectivelyDan Bader 01:57. # Process each hex digit from the left (most significant digit)įor hexDigitIdx in range(len(hexStr)): # hexDigitIdx = 0, 1, 2. (C/C++/C#/Java use braces # lookup table for hex to dec # Prompt and read hex string

Compound Statements and Indentation: Python uses indentation to indicate body-block.

(C/C++/C#/Java's statement ends with a semi-colon ( ))

Statements: Python's statement ends with a newline.

Data Types: Python support these data types: int (integers), float (floating-point numbers), str (String), bool (boolean of True or False), and more.

(In C/C++/C#/Java, you need to declare the name and type of a variable before using it.) Python associates types with the objects, not the variables, i.e., a variable can hold object of any types.

A variables is created via the initial assignment. You do NOT need to declare variables (name and type) before using them. Variable Type Declaration: Like most of the scripting interpreted languages (such as JavaScript/Perl), Python is dynamically typed.(C/C++/C#/Java use double quotes for string and single quotes for character. Python also supports multi-line string, delimited by either triple-single ( '''.''') or triple-double quotes ( """."""). String: Python's string can be delimited by either single quotes ( '.') or double quotes ( ".").(C/C++/C#/Java end-of-line comment begins with '\\'.

Python does not support multi-line comments.

Comment: Python's comment begins with a '#' and lasts until the end-of-line.

Create a list comprehension containing the squares of the integers from 1 till n2 (including 1 and. This section is for experienced programmers to look at Python's syntaxes and those who need to refresh their memory. Description You are given an integer n as the input. I personally recommend that you learn a traditional general-purpose programming language (such as C/C++/Java) before learning scripting language like Python/JavaScript/Perl/PHP because they are less structure than the traditional languages with many fancy features. This article is NOT meant to be an introduction to programming. I shall assume that you are familiar with some programming languages such as C/C++/Java.