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Converting integer to string in Python
...tr__() defined. In fact
str(a)
is equivalent to
a.__str__()
The same if you want to convert something to int, float, etc.
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How to check if a python module exists without importing it
I need to know if a python module exists, without importing it.
13 Answers
13
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How to write to a file, using the logging Python module?
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Can the filename be a hdfs location? If yes, how?
– Augmented Jacob
Sep 25 '17 at 20:59
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Get ffmpeg information in friendly way
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Now is possible to use -progress - to print friendly info formatted by key=value.
ffmpeg -i video.mp4 .......-s 1920x1080 -progress - -y out.mp4
speed=5.75x
frame=697
fps=167.7
stream_0_0_q=39.0
bitrate=2337.0kbits/s
total...
Oracle 11.2.0.4 RAC FOR redhat 6.4 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...ng
cd /etc/sysconfig/network-scripts/
cp /etc/sysconfig/network-scripts/ifcfg-eth* /etc/sysconfig/network-scripts/备份
vi ifcfg-bond0
节点1 为172.16.110.100
节点2 为172.16.110.110
vi ifcfg-bond1
节点1 为10.10.120.100
节点2 为10.10.120.110
节点1，节点2一...
Is it possible to import a whole directory in sass using @import?
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If you are using Sass in a Rails project, the sass-rails gem, https://github.com/rails/sass-rails, features glob importing.
@import "foo/*" // import all the files in the foo folder
@import "bar/**/*" // import all the...
MySql Table Insert if not exist otherwise update
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now I defined the datenum as unique, and it's work fine, thanks
– OHLÁLÁ
May 18 '11 at 8:21
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What is the most pythonic way to check if an object is a number?
...True
'2' False
This is, of course, contrary to duck typing. If you are more concerned about how an object acts rather than what it is, perform your operations as if you have a number and use exceptions to tell you otherwise.
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Difference between variable declaration syntaxes in Javascript (including global variables)?
...undefined.
This only applies to the window object, and only (as far as I know) to IE8 and earlier (or IE9-IE11 in the broken "compatibility" mode). Other browsers are fine with deleting window properties, subject to the rules above.
When var happens
The variables defined via the var statement a...
What does T&& (double ampersand) mean in C++11?
...bs Jul 13 '14 at 16:12
The biggest difference between a C++03 reference (now called an lvalue reference in C++11) is that it can bind to an rvalue like a temporary without having to be const. Thus, this syntax is now legal:
T&& r = T();
rvalue references primarily provide for the follo...