Analysis of basic Python-Process Control and basic python Processes

Analysis of basic Python-Process Control and basic python Processes

The Python programming language is very powerful, and its convenient application features also play a very important role for developers. Here we can first understand the concepts related to the keywords of Python process control, so as to grasp the characteristics of this language.

Python is an interpreted, object-oriented, and dynamic data type high-level programming language.

Python was invented by Guido van rosum at the end of 1989. The first public release was released in 1991.

Like Perl, Python source code also complies with the GPL (GNU General Public License) protocol.

Which language has flow control, that is, if switch while statements.

The principle and function of distance control for each language are similar, but the expressions are different.

Today I will share with you a Python statement, such as conditions and loops.

Here, we will not use braces, but code blocks.

Note the colon after if and else:

If

<code class="hljs lua">name = raw_input("What is your name? ")if(name.endswith('Gumby')):print 'Hello, Mr. Gumby'</code>

Else

<code class="hljs lua">name = raw_input("What is your name? ")if(name.endswith('Gumby')):print 'Hello, Mr. Gumby'else:print 'Hello, Stranger'</code>

Elif

Note that the else if statement we use in C ++ is directly written in Python: elif

<code class="hljs python">num = input('Enter a number: ')if num >0 :print 'The number is positive'elif num < 0:print 'The number is negative'else:print '0'</code>

While

<code class="hljs lua">x = 1while x <= 100print xx += 1</code>

For Loop

If you can use for, try to avoid using while

<code class="hljs livecodeserver">words = ['this', 'is', 'an', 'ex', 'parrot']for word in words:print word</code>

For dictionary Traversal

<code class="hljs lua">d = {'x':1, 'y':2, 'z':3}for key in d:print key, 'corresponds to', d[key]</code>

Zip and row Iteration

<code class="hljs lua">names = ['name', 'beth', 'george', 'damo']ages = [12, 45, 32, 99]for name, age in zip(names, ages):print name, 'is', age, 'years old'</code>

Break bounce cycle

Continue

Now, I will introduce you to the basic Python-Process Control editor, and hope to help you!

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