Importing Library¶

There are two methods to import library functions:

- import <libName>                        # access function through: libName.functionName
- import <libName> as <shortLibName>      # access function through: shortLibName.functionName
- from   <libName> import *               # all functions available at global namespace
- from   <libName> import <functionName>  # access function through: functionName    
- from   <libName> import <functions> as <shortFunctionName>  # access function through shortFunctionName

Import Entire Library¶

Import As An Object¶

In [73]:

import math
math.sqrt(9)

Out[73]:

3.0

Use as for aliasing library name. This is useful if you have conflicting library name

In [74]:

import math as m
m.sqrt(9)

Out[74]:

3.0

Import Into Global Name Space¶

All functions in the library accessible through global namespace

from <libName> import *

Import Specific Function¶

In [75]:

from math import sqrt
print (sqrt(9))

3.0

Use as for aliasing function name

In [76]:

from math import sqrt as sq
print (sq(9))

3.0