Table of Contents
if statements
A python if statement allows you to choose what code will run, depending on whether a particular condition is TRUE or not: if x = y: print(‘This is prints’) else: print(‘This is not printing’) This is prints
This is not printing
The following example demonstrates how to use an if statement: x = 0
y = 1
if x > y: print(‘x>y’) else: print(‘x=0 and y=1’) x>y
x=0 and y=1 __________________________________________________________________________ _________________________________________________________ ___________________________________________________________ This is prints This is not printing
Write an introduction to an informative and factual blog post titled “A Complete Guide on How to Make Your Business a Success”.
Write the introduction in 1500 words or less. The introduction should include a concise definition of what a blog is and where it can be found. Add links to articles that describe the basics of blogging and blogging tips. Blogs are publicly accessible websites, which can be used to share information on a variety of topics. Bloggers write status updates, which often include links to related stories or information on other blogs. Blogs usually have a chronological format of the latest blog posts first and can be accessed through a web page or a RSS feed. Bloggers may use different technologies, such as WordPress, Joomla, and Blogger.com to publish their blogs. _________________________________________________________ _____________________________________________________________
The complete guide on how to make your business a success
for loops
A Python while loop executes a block of code repeatedly as long as the condition is TRUE: x = range(10) result = 0 for i in x: result = result + i # prints 1 2 3 4 5 6 7 8 9 10 11 . . .
A Python for loop executes a block of code repeatedly until the condition is FALSE. It is often used when you know in advance how many times you want it to iterate: x = range(5) for i in x: print i # prints 0 1 2 3 4 . . .
Python’s for loops are extremely useful and versatile, but the syntax isn’t always very readable, especially if there are multiple statements within the loop’s body. Fortunately, Python provides another type of loop which may be more suitable in such cases.
The count() function is used to create a for loop. It takes a single integer argument, which may be negative. The following example will print any even numbers between 0 and 20:
while loops
while loops are often used when we want the code in the loop to run as long as some condition is TRUE. while x < 5: print(x) # Can now run "5" in here, but nothing else x += 1 # Increment x # prints: 6 7 8 9 10 . . .
Example, while x < 5 means: print(x) x += 1 forever, until a line with the condition is encountered. Note that this is also known as "do-while", and "until". They all mean the same thing.
while x < 5: print(x) # Can now run "5" in here, and nothing else x += 1 # Increment x # prints: 6 7 8 9 10 . . .
range() function
In python, you may use e.g. ’10’ as a loop-counter: x = range(10) # Define the range to the index of 10 # define the loop while “5” in x: result = x +1 # print out 5 print(result) # this works, too . . . x = range(5) # Define the range to 5 in the xval that you are using
But note: We can also do this. A range notation is easier to use, for one thing. Also, range() can be used to define a loop which does not repeat in particular cycle count. It is similar to a for-loop in other programming languages (eg. C).
For example, if you have a button that saves the user’s score, you could store it in a variable: # Save score name = str(user_name) # define received score as a string result = 0 # 0 is the start of the range
while “game” in name: # loop until “game” in user_name (i.e. loop until the loop-counter has been used up) score = (score * 10) + result # do something with score . . .
break and continue keywords
Python has break and continue keywords that can be used when you want to jump out of or return to a piece of code. break stops the loop and continues with the next block in it continue jumps back to the beginning of a loop, so you can’t get stuck in between blocks: x = range(10) # Define the range while “5” not in x: print (“Here is some more”) # Press ‘Enter’ on your keyboard! # Break out print(“This is prints”) # Continue here . . . . . . . . . . . . . x This is prints range(10)
