Exam 1 Crip Sheet
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// whole # division
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sytax -error in code form
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a+=1 -> a=a+1
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% find the remainder
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semantic -error in logic
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a/=1 -> a=a/1
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** read right to left
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/ always gives a float
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x%y = x-y*(x//y)
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{:.xf} -round float to x decimals points
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abs() -gives absolute values
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pow(number,exponent)
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int() -turns object to integer
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float() -turns object to float
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-round(number,what to round to)
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-max() -finds max in list
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min() -finds min in list
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math.pi is pi
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math.sqrt(x) -takes square root of x
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math.log(base,variable)
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math.e is e
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math.ceil(x) -returns smallest integer greater than x
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math.trunc(x) -removes decimal values from x
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\n -end current line and start new
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\t -creates a "tab"
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\' or \" -doesnt interpret as string delimiter
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\\ -true backslash
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, creates defaut space of 1. can be use with all object types
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+ creates no space. Cant be use to put together string and integer (or float)
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string.lower() -turns all letters to lowercase
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string.upper() -turns all letter to uppercase
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string.capitalize() -only first letter in string is uppercase
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string.title() -first letter of every word is uppercase
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string.replace(string you want to replace, what you replace with)
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string.find(what you want to find)
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gives number of location in string
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returns -1 if it cant find
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string.count(what you want to count)
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will give number counted
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returns 0 if nothing to count
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string.strip(what you want to remove)
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sep="" -used to change default space betwen objects seperated by ,
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Variables start with letter or _
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Variables can't have spaces
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string and integers cant be added
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string and sting cant be multiplied
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Uppercase < Lowecase
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true
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a < b
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true
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len(tuple) -gives the # of objects in a tuple
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cant update a tuple
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tuples and strings are immutable
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tuples can be added
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ex r=(1,1)
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r+s=(1,1,'a','b')
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If, elif, and else must all end with :
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any commands following must be indented
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can us <, <=, >, >, >=, ==, or !=
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!= is for not equal to
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cant use = since that is for variable assignment
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output values are only true or false
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def function_name(Variable):
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every line which comes below is indented
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can end with return statement to return a variable
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