For loops

a)

   1 for i in range(0,4,1):
   2      print i
   3   
   4 0
   5 1 
   6 2
   7 3

Solution:

b)

   1 for i in 4*range(4):
   2      print i
   3   
   4 0 0
   5 0 1
   6 0 2
   7 0 3
   8 1 0
   9 1 1
  10 1 2
  11 1 3
  12 2 0
  13 2 1
  14 2 2
  15 2 3
  16 3 0
  17 3 1
  18 3 2
  19 3 3

Solution:

Data types

A=dict([('a',1),('b',2)])

Please specify the data types:

Provide an alternative way to assign A

Scipy numeric types

from scipy import *

One byte consists of eight bit and covers the value range of 0..255 (uint8, unsigned integer) or -128..127. 

   1 b=int8(128)
   2 -128 # Invalid range
   3 
   4 b.nbytes
   5 1

a)

What is the value range of the following types and how many bytes are allocated in the memory?

Solution:

b)

How many bytes are allocated in the memory by these floating point types?

Solution:

Data structures

a)

   1 D={'A':array(range(10)),'B':array(range(10))+1}

Solution:

Reading and practicing

Install python and ipython on your computer and read through the tutorial which comes with the documentation. There are translations in other languages: