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13 Cards in this Set
- Front
- Back
How to print to the screen and accept input in python |
variableName = input("your text here") - this will print the text to the screen and wait for a user to press enter (presumably after they have typed their response) - this will store the response as a String (event tho you don't declare a type anywhere). - You cannot multiple this String by an number, you will get a TypeError.. again even tho you don't declare types anywhere |
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How to convert a string into an int |
variableName = int(your string variable here) |
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how to import modules |
import moduleName |
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How to print things to the screen |
print("Your string", aVariableIfYouWant, "AnotherStringIfYouWant") |
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python parses its statements of code by EACH line. thus if you have a statement of code that is too long to fit on 1 line, how to do break it into multiple lines |
break them apart with the \ character, then at least 1 space to indent the next line variableName = math.pi * \ numberVariable + 45 notice the space before numberVariable (must have at least 1 space) |
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How to make comments in python |
# write a comment here |
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how to declare types in python |
there are no primatives in python, everything is an object. To declare an int, float or string etc.., you pass the value into its constructor which outputs the value so you can store it in a variable variableNameInt = int(56) variableNameStr = "heres a string" or 'heres a string' - strings are declared with either " " or ' ' |
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How to cast a float as an integer |
int(float) |
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what if you divide two integers and the result is a fraction? |
Python will convert the result into a float automatically
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what if you only wanted the number of times a number divided into another number? |
You could cast it like so: int(4/3) or you could use the provided operator: 4//3 either way the result is 1 You could return a float version of this if 1 of the number are a float: 4//3.0 = 1.0 |
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How about remainders |
Same as java: use modulo % |
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What about exponent |
use two asterisks ** like so: 3**3 = 27 |
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Accumulators and other similar shortcuts |
All the same as java += -= /= *= |