Python Symbol Review

Front 1

not

Back 1

A negation as a preformed operation

Front 2

as

Back 2

Used in a with statement to define the alias to assign each result of X to.

Front 3

with

Back 3

Wrap the execution of a block with methods defined by a context manager

Front 4

assert

Back 4

The assert statement verifies that the expression resolves to be true. If it does not, it will raise an AssertionError, with an optional expression2

Front 5

if

Back 5

A conditional execution which executes some code if the statement is true.

Front 6

pass

Back 6

Nullifies the operation, when this is executed, nothing happens.

Front 7

yield

Back 7

Return a generator object (like a list or tuple) instead of a static object.

Front 8

break

Back 8

Will exit out of the nearest loop

Front 9

except

Back 9

When a try statement fails, the except statement catches it and returns

Front 10

import

Back 10

The import statement initializes the external module so that it's functions can be used in the current environment.

Front 11

class

Back 11

A object that contains functions and can be instantiated

Front 12

exec

Back 12

Allows for the dynamic execution of code

Front 13

in

Back 13

When used with an if, allows for the code to loop through all the members of a generator object

Front 14

raise

Back 14

Used to call an exception which can be customized per situation

Front 15

continue

Back 15

When encountered, causes the application to skip the rest of the current loop

Front 16

finally

Back 16

The finally statement is the cleanup function in the 'try' statement

Front 17

is

Back 17

Compares the identity of two objects. Two objects referencing the same memory location will return true, but objects that are 'equal' will not.

Front 18

def

Back 18

defines a function

Front 19

lambda

Back 19

creates an anonymous function

Front 20

try

Back 20

specifies exception handlers and/or cleanup code for a group of statements.

Front 21

none

Back 21

The absence of a value

Front 22

[ ]

Back 22

lists

Front 23

( )

Back 23

tuple

Front 24

\a

Back 24

ASCII Bell

Front 25

\b

Back 25

Backspace

Front 26

\f

Back 26

ASCII Formfeed

Front 27

\r

Back 27

Carriage return

Front 28

\v

Back 28

Vertical tab

Front 29

%d

Back 29

signed decimal

Front 30

%i

Back 30

signed decimal

Front 31

%o

Back 31

octal

Front 32

%x

Back 32

Signed Hex, lowercase

Front 33

%X

Back 33

Signed hex, uppercase

Front 34

%e

Back 34

floating point in exponential format

Front 35

%E

Back 35

floating point in exponential format, uppercase

Front 36

%f

Back 36

floating point in exponential format, lowercase

Front 37

%F

Back 37

floating point in exponential format, Uppercase

Front 38

%g

Back 38

Floating point format, Lowercase exponential format if less than -4 , decimal format otherwise

Front 39

%G

Back 39

Floating point format. Uppercase exponential format if less than -4, decimal format otherwise

Front 40

%c

Back 40

Single Character

Front 41

%r

Back 41

String token, coverts using repr( ), "x"

Front 42

%s

Back 42

String token, converts using str( ), "x"

Front 43

%%

Back 43

No argument converted, results in '%' in the result

Front 44

del

Back 44

The del statement is a way to remove an item from a list, given it's index instead of it's value:

Front 45

from

Back 45

This is the root of the import statement

Front 46

not

Back 46

Not creates a negation of the performed operation

Front 47

while

Back 47

The while loop continues until the expression becomes false