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Python/postgres/psycopg2: getting ID of row just inserted
I'm using Python and psycopg2 to interface to postgres.
3 Answers
3
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What does pylint's “Too few public methods” message mean
...able/
import attr
@attr.s
class MyClass(object): # or just MyClass: for Python 3
foo = attr.ib()
bar = attr.ib()
What you get extra: not writing constructors, default values, validation, __repr__, read-only objects (to replace namedtuples, even in Python 2) and more.
b) Use dataclasses...
is node.js' console.log asynchronous?
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Console.log is asynchronous in windows while it is synchronous in linux/mac. To make console.log synchronous in windows write this line at the start of your
code probably in index.js file. Any console.log after this statement will be considered as synchronous by interpreter.
if (process.s...
Writing a compiler in its own language
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Adding a curiosity to the previous answers.
Here's a quote from the Linux From Scratch manual, at the step where one starts building the GCC compiler from its source. (Linux From Scratch is a way to install Linux that is radically different from installing a distribution, in that you have to ...
Generate random integers between 0 and 9
How can I generate random integers between 0 and 9 (inclusive) in Python?
19 Answers
1...
What are “first class” objects?
...lasses are not first class objects but instances of those classes are. In Python both the classes and the objects are first class objects. (See this answer for more details about classes as objects).
Here is an example of Javascript first class functions:
// f: function that takes a number and r...
NPM global install “cannot find module”
...ronment variable depends on your operating system. I'm using a flavour of Linux, so I used export NODE_PATH=... to set it in the local shell such that it is exported to commands run in that shell. To make the change persistent or available to all shells, put it in .profile or similar. The concept...
Python datetime - setting fixed hour and minute after using strptime to get day,month,year
...curious if there is a way to do it without the extra date variable? (I'm a python newbie)
– user1678031
Sep 18 '12 at 0:38
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Why are floating point numbers inaccurate?
...-bit float. Gloss over these if you only care about the output (example in Python):
def float_to_bin_parts(number, bits=64):
if bits == 32: # single precision
int_pack = 'I'
float_pack = 'f'
exponent_bits = 8
mantissa_bits = 23
exponent_b...
Python xml ElementTree from a string source?
...ot = ET.fromstring(xmlstring). Equals ET.parse('file.xml').getroot(): docs.python.org/3.6/library/…
– Anton Tarasenko
Aug 11 '17 at 17:43
3
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