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open() in Python does not create a file if it doesn't exist
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830
You should use open with the w+ mode:
file = open('myfile.dat', 'w+')
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How can I open multiple files using “with open” in Python?
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1082
As of Python 2.7 (or 3.1 respectively) you can write
with open('a', 'w') as a, open('b', 'w')...
How can I change the color of my prompt in zsh (different from normal text)?
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10 Answers
10
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Peak-finding algorithm for Python/SciPy
...from scipy.signal import find_peaks
x = np.sin(2*np.pi*(2**np.linspace(2,10,1000))*np.arange(1000)/48000) + np.random.normal(0, 1, 1000) * 0.15
peaks, _ = find_peaks(x, distance=20)
peaks2, _ = find_peaks(x, prominence=1) # BEST!
peaks3, _ = find_peaks(x, width=20)
peaks4, _ = find_peaks(x, th...
How do I define and use an ENUM in Objective-C?
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109
Your typedef needs to be in the header file (or some other file that's #imported into your head...
How to join two generators in Python?
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240
I think itertools.chain() should do it.
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How to sort in mongoose?
... iweiniwein
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What is the correct way to start a mongod service on linux / OS X?
... mongodb
==> Downloading https://homebrew.bintray.com/bottles/mongodb-3.0.6.yosemite.bottle.tar.gz ### 100.0%
==> Pouring mongodb-3.0.6.yosemite.bottle.tar.gz
==> Caveats
To have launchd start mongodb at login:
ln -sfv /usr/local/opt/mongodb/*.plist ~/Library/LaunchAgents
Then to load mon...
How can I create tests in Android Studio?
...mples to help you see how testing works. If you follow along for the next 10 minutes, you will be all set up to start adding your tests to your own app. I think you'll be surprised how easy it is. I certainly was.
Intro to Android Testing
There are two different types of tests that you will do.
Loc...
Sequelize Unknown column '*.createdAt' in 'field list'
...sequelize = new Sequelize('sequelize_test', 'root', null, {
host: "127.0.0.1",
dialect: 'mysql',
define: {
timestamps: false
}
});
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