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import time
import os
import sys
print "This will draw the multiplication table with dimensions of your choice."
print "Feel free to modify and drawing speed and other variables."
# how many numbers per second? Default is 5.
drawing_speed = 5
# raw_input() will get whatever text you enter with your keyboard.
# int() will give an error if it can't turn that text into a number.
try:
print "How many numbers wide?"
x = int(raw_input())
print "How many numbers high? "
y = int(raw_input())
# If there's an error in the "try:" block of code, the following will happen.
# The program will print an error message and quit.
except:
print "That is not a valid number."
sys.exit()
# In case everything went well, the program didn't quit and is now here.
# The following will create two lists of numbers, each starting with 1 and
# ending with whatever you entered as x ("row" list) and y ("column" list).
# Practice: By default, both lists start with 1. What if we changed that?
row = range(1, x+1)
column = range(1, y+1)
# From now on, everything we want to print on the screen we'll store
# in the "output" variable. First we make it an empty string, and then add to it
# whatever we want to print.
output = ""
# the first printed line, for decoration:
# add the beginning of it
output += "|-------|--"
# for each number in a row, add eight dashes and mark the end of line with \n
# \n is called a 'newline' and it makes your console start writing a new line.
output += len(row) * "--------" +"\n"
# What the second line starts with. \t marks one tab.
output += "|\t|\t"
# Now, we would like to print the first row of numbers, which
# represent the factors we'll multiply. Add each number from "row"
# to the output string. str(number) turns a number to characters
# (like number 42 to characters '4' and '2')
for number in row:
output += str(number) + "\t"
# add another decorative line
output += "\n" + "|-------|--" + len(row) * "--------" + "\n"
# for each number in the first column, multiply it with each number in the
# first row. One by one, add the results to "output" and print it.
for factor1 in column:
output += "| " + str(factor1) + "\t|\t"
for factor2 in row:
output += str(factor1*factor2) + "\t"
# clear the screen from what was last printed (old output) so
# we can print the new output (with one result added)
os.system('clear')
print output
# Pause the program. If "drawing_speed" is 5, it will pause for
# 1/5 seconds (0.2 seconds), which gives us five characters
# per seconds.
time.sleep(1.0 / drawing_speed)
# mark the end of the line
output += "\n"
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