Python 3.1 (r31:73574, Jun 26 2009, 20:21:35) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> 2/2
1.0
Is this intended? I strongly remember earlier versions returning int/int=int? ...
I have a tuple of tuples from a MySQL query like this:
T1 = (('13', '17', '18', '21', '32'),
('07', '11', '13', '14', '28'),
('01', '05', '06', '08', '15', '16'))
I'd like to convert all the string elements into integers and put them back i...
I want to convert an integer to a string in Python. I am typecasting it in vain:
d = 15
d.str()
When I try to convert it to string, it's showing an error like int doesn't have any attribute called str.
I have two integer values a and b, but I need their ratio in floating point. I know that a < b and I want to calculate a / b, so if I use integer division I'll always get 0 with a remainder of a.
How can I force c to be a floating point number in Pyt...
In Python, how can I parse a numeric string like "545.2222" to its corresponding float value, 545.2222? Or parse the string "31" to an integer, 31?
I just want to know how to parse a float str to a float, and (separately) an int str to an int.
I'm writing a program which calculates the check digit of an ISBN number. I have to read the user's input (nine digits of an ISBN) into an integer variable, and then multiply the last digit by 2, the second last digit by 3 and so on. How can I "split" the...
Is there any way to tell whether a string represents an integer (e.g., '3', '-17' but not '3.14' or 'asfasfas') Without using a try/except mechanism?
is_int('3.14') = False
is_int('-7') = True
I have a string in the format: 'nn.nnnnn' in Python, and I'd like to convert it to an integer.
Direct conversion fails:
>>> s = '23.45678'
>>> i = int(s)
Traceback (most recent call last):
File "<stdin>", line 1, in <module&...
I'm working on making a URL shortener for my site, and my current plan (I'm open to suggestions) is to use a node ID to generate the shortened URL. So, in theory, node 26 might be short.com/z, node 1 might be short.com/a, node 52 might be short.com/Z, and...
Python's math module contain handy functions like floor & ceil. These functions take a floating point number and return the nearest integer below or above it. However these functions return the answer as a floating point number. For example:
import m...
I have the following code:
l = ['-1.2', '0.0', '1']
x = 100.0
for i in l:
if i < x:
x = i
print x
The code should find the lowest value in my list (-1.2) but instead when i print 'x' it finds the value is still 100.0
Where is my code go...
I want to create string using integer appended to it, in a for loop. Like this:
for i in range(1,11):
string="string"+i
But it returns an error:
TypeError: unsupported operand type(s) for +: 'int' and 'str'
What's the best way to concatenate the ...
How do you express an integer as a binary number with Python literals?
I was easily able to find the answer for hex:
>>> 0x12AF
4783
>>> 0x100
256
and octal:
>>> 01267
695
>>> 0100
64
How do you use literals to e...
This problem is killing me. How does one roundup a number UP in Python?
I tried round(number) but it round the number down. Example:
round(2.3) = 2.0 and not 3, what I would like
The I tried int(number + .5) but it round the number down again! Example...
Does anybody know how Python manage internally int and long types?
Does it choose the right type dynamically?
What is the limit for an int?
I am using Python 2.6, Is is different with previous versions?
How should I understand the code below?
>&...
I want to be able to generate a number of text files with the names fileX.txt where X is some integer:
for i in range(key):
filename = "ME" + i + ".txt" //Error here! Can't concat a string and int
filenum = filename
filenum = open(filename , ...