"Little Turtle" 001 first knowledge of Python

scripting language (Scripting language):

is a computer programming language that can do complex things quickly in a simple way, so Python is easier than C, C + +, Java and other programming languages.

Scripts can automate interactive operations that were originally done with the keyboard, and users can use scripts to combine some common operations into a single set of serial, easy to operate.

IDLE:

Idle is the basic IDE for Python programs (integrated development environment) with basic IDE functionality for basic Python development.

Idle is a shell (shell), a Windows-like CMD window, a way to interact with a program by typing text

After opening the interface, the following code appears,>>> for Python is ready to enter code, similar to MATLAB

Python 3.4.4 (V3.4.4:737efcadf5a6, Dec, 20:20:57) [MSC v.1600-bit (AMD64)] on Win32type "copyright", "credits" or "license ()" For more information.>>>

Print:

Correct code: No ";" Number at the end

>>> print ("Hello world!") Hello world!

>>> print (2+3) 5>>> 2+35>>> 987*123121401

>>> print ("I love" + "You") I loveyou>>> print (' I love ' + ' you ') I love You

>>> print ("I love your" *8) I love you I love you I love you I love you I love you I love you I love you I love you >>> print ("I love you\n" *8) I love YouI love YouI love YouI love YouI love YouI love YouI love YouI Love

Error code:

#python2系列中可以使用, but error >>>print "Hello world!" in Pyhton3 series Syntaxerror:missing parentheses in call to ' print '

#C语言输出函数 >>> printf ("Hello world!") Traceback (most recent): File "<pyshell#5>", line 1, in <module> printf ("Hello world!") Nameerror:name ' printf ' is not defined

#python中不能将两个不同类型的东西加在一起, but you can use multiplication for strings to represent repetition >>> print ("I Love You" +8) Traceback (most recent call last): File "< Pyshell#14> ", line 1, in <module> print (" I Love You "+8) Typeerror:can ' t convert ' int ' object to str implicitly

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"Little Turtle" 001 first knowledge of Python