Python examples: Difference between revisions
| Line 7: | Line 7: | ||
Type | Type | ||
x=1 | >>>x=1 | ||
and then simply | and then simply | ||
x | >>>x | ||
and you'll see | and you'll see | ||
| Line 20: | Line 20: | ||
Type | Type | ||
x=1.01 | >>>x=1.01 | ||
and then after you type "x" you'll see | and then after you type "x" you'll see | ||
x | >>>x | ||
1.01 | 1.01 | ||
| Line 30: | Line 30: | ||
Clearly you have a real-time calculator in hand, so try something more exciting. | Clearly you have a real-time calculator in hand, so try something more exciting. | ||
x=1.01 | >>>x=1.01 | ||
y=1.0001 | >>>y=1.0001 | ||
x/y | x/y | ||
| Line 40: | Line 40: | ||
Modify that with | Modify that with | ||
z=x/y | >>>z=x/y | ||
z | >>>z | ||
and you'll see the same result. But now try | and you'll see the same result. But now try | ||
int(z) | >>>int(z) | ||
and you'll see | and you'll see | ||
1 | 1 | ||
That is, the function int() took the integer part of z. You can put that in another variable such as | |||
>>>a=int(z) | |||
>>>a | |||
1 | |||
Curiously, a seems to be an integer. It is said to be ''dymanically typed'' in this assignment. That can change. If you now add a little bit to a you'll see it turns into a floating point number | |||
>>>a = a + 0.001 | |||
>>>a | |||
1.001 | |||
Revision as of 06:52, 7 February 2013
This page contains examples and links to programs used for our Research Methods - Programming with Python short course.
Very simple Python
Start a Python interactive session using the "python" command to get a >>> prompt.
Type
>>>x=1
and then simply
>>>x
and you'll see
1
Type
>>>x=1.01
and then after you type "x" you'll see
>>>x 1.01
Clearly you have a real-time calculator in hand, so try something more exciting.
>>>x=1.01 >>>y=1.0001 x/y
and you'll see something like this
1.0098990100989902
Modify that with
>>>z=x/y >>>z
and you'll see the same result. But now try
>>>int(z)
and you'll see
1
That is, the function int() took the integer part of z. You can put that in another variable such as
>>>a=int(z) >>>a 1
Curiously, a seems to be an integer. It is said to be dymanically typed in this assignment. That can change. If you now add a little bit to a you'll see it turns into a floating point number
>>>a = a + 0.001 >>>a 1.001