SCRIPTING EXAM 1

interpreter

processes a program line-by-line

compiler

processes a program’s code as a whole

Symbol to comment in python?

#

Triple quotes

used for multi-line strings

\n

new line

\t

tab

**

exponent

// (operator)

floor division (round down)

list

contains multiple of the same data type

tuple

list, but immutable

dictionary

stores key-value pairs

keys()

returns all the keys in a dictionary

values()

returns all the values in a dictionary

items()

returns all the key-value pairs in a dictionary

range function

(start, stop, step)

break

exits loop

continue

moves to next loop iteration

Set

can contain multiple elements of different data types

uniform()

returns random float between (a, b)

random()

returns random float between (0.0, 1.0)

randint()

returns random integer between (a, b)

relative path

location relative to current working directory

absolute path

location starting from root of the file system

os.sep

view os separator

r

read (start at index 0)

w

write (start at index 0)

a

append (start at end of file)

r+

read and write

w+

write and read

a+

append and read

rb

read binary file

wb

write to binary file

ab

append to binary file

with keyword (Python file operations)

closes a file after operations in the block are finished

shutil.copy()

copy a file from source path to dst path

os.walk()

generates the file names in a directory tree by walking either top-down or bottom-up

rfind()

return the highest (rightmost) index where a substring is found

AttributeError

error is raised when you attempt to change an element of a tuple