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Format number to 2 decimal places
I would like to know how can I output a number with 2 decimal places, without rounding the original number.
6 Answers
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In the shell, what does “ 2>&1 ” mean?
...
2671
File descriptor 1 is the standard output (stdout).
File descriptor 2 is the standard error (s...
How can I add items to an empty set in python
...; type(d)
<type 'set'>
>>> d.update({1})
>>> d.add(2)
>>> d.update([3,3,3])
>>> d
set([1, 2, 3])
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Python unittests in Jenkins?
...ample tests:
tests.py:
# tests.py
import random
try:
import unittest2 as unittest
except ImportError:
import unittest
class SimpleTest(unittest.TestCase):
@unittest.skip("demonstrating skipping")
def test_skipped(self):
self.fail("shouldn't happen")
def test_pass(sel...
Abort makefile if variable not set
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279
TL;DR: Use the error function:
ifndef MY_FLAG
$(error MY_FLAG is not set)
endif
Note that ...
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...is the inbuilt template tag to display the present year dynamically. Like "2011" what would be the template tag to display that?
...
Combining two lists and removing duplicates, without removing duplicates in original list
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172
You need to append to the first list those elements of the second list that aren't in the first ...
import module from string variable
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288
The __import__ function can be a bit hard to understand.
If you change
i = __import__('matp...
Python: print a generator expression?
...for example:
>>> sorted(x*x for x in range(10))
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
Basically all the other comprehensions available in Python 3 and Python 2.7 is just syntactic sugar around a generator expression. Set comprehensions:
>>> {x*x for x in range(10)}
{0, 1, 4, 81,...
Most efficient way of making an if-elif-elif-else statement when the else is done the most?
...':
the_thing = 1
elif something == 'that':
the_thing = 2
elif something == 'there':
the_thing = 3
else:
the_thing = 4
2.py
something = 'something'
options = {'this': 1, 'that': 2, 'there': 3}
for i in xrange(1000000):
the_thing = options.get(someth...