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How do I execute a string containing Python code in Python?
...'exec' is something like if s=='foo': x.foo = 42 elif s=='bar': x.bar = 42 etc, which they may then write as exec ("x.%s = 42" % s). For this common case (where you only need to access an object's attribute that is stored in a string), there is a much faster, cleaner and safer function getattr: just...
Encoding an image file with base64
...l content, it can just be something like "on my site…", "on my blog…", etc.
– Makyen♦
Apr 26 '19 at 22:03
Thanks...
How to write to a file, using the logging Python module?
...se a configuration file. It allows me to switch logging levels, locations, etc without changing code when I go from development to release. I simply package a different config file with the same name, and with the same defined loggers.
import logging.config
if __name__ == '__main__':
# Configur...
Check if object is file-like in Python
...ll expect that if fileno is present then other functionality is available, etc. And similarly for write(buf) (although there are a lot fewer options in that direction).
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How to achieve function overloading in C?
...u just make all the whatevers into separate functions (set_int, set_float, etc). Then "tagging with the type" becomes "add the type name to the function name". The version in this answer involves more typing, more runtime cost, more chance of errors that won't be caught at compile time... I fail to ...
What is time_t ultimately a typedef to?
...%d\n", (int)time_t);
Then just read it back the same way (fread, fscanf, etc. into an int), and you have your epoch offset time. A similar workaround exists in .Net. I pass 64-bit epoch numbers between Win and Linux systems with no problem (over a communications channel). That brings up byte-order...
Access Denied for User 'root'@'localhost' (using password: YES) - No Privileges?
...
Try the following commands
~$ sudo /etc/init.d/mysql stop
~$ sudo mysqld_safe --skip-grant-tables &
~$ mysql -u root
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1 to server version: 4.1.15-Debian_1-log
Type 'help;...
PHP: Storing 'objects' inside the $_SESSION
...ve more complexity: network-attached memory, a stand-alone session server, etc.
Given all that, the more info you put in the session, the bigger the impact on performance (as Vinko points out). Also as Vinko points out, if your object isn't serializable, the session will misbehave. So, as a rule o...
How to list all properties of a PowerShell object
...it shows loads of properties like Status , PowerManagementCapabilities , etc. However, when in PowerShell I do the below I only get back a couple:
...
Benchmarking (python vs. c++ using BLAS) and (numpy)
... (renamed: MKL --> Nehalem MKL, Netlib Blas --> Nehalem Netlib BLAS, etc)
Single threaded performance:
Multi threaded performance (8 threads):
Threads vs Matrix size (Ivy Bridge MKL):
Benchmark Suite
Single threaded performance:
Multi threaded (8 threads) performance:
Conclusi...