Basic Analysis of Python Process Control

Basic Analysis of Python Process Control

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

name = raw_input("What is your name? ")if(name.endswith('Gumby')):  print 'Hello, Mr. Gumby'

Else

name = raw_input("What is your name? ")if(name.endswith('Gumby')):  print 'Hello, Mr. Gumby'else:  print 'Hello, Stranger'

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

num = input('Enter a number: ')if num >0 :  print 'The number is positive'elif num < 0:  print 'The number is negative'else:  print '0'

While

x = 1while x <= 100  print x  x += 1

For Loop
If you can use for, try to avoid using while

words = ['this', 'is', 'an', 'ex', 'parrot']for word in words:  print word

For dictionary Traversal

d = {'x':1, 'y':2, 'z':3}for key in d:  print key, 'corresponds to', d[key]

Zip and row Iteration

names = ['name', 'beth', 'george', 'damo']ages = [12, 45, 32, 99]for name, age in zip(names, ages):  print name, 'is', age, 'years old'

Break bounce cycle

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