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What does -1 mean in numpy reshape?

...numpy allow us to give one of new shape parameter as -1 (eg: (2,-1) or (-1,3) but not (-1, -1)). It simply means that it is an unknown dimension and we want numpy to figure it out. And numpy will figure this by looking at the 'length of the array and remaining dimensions' and making sure it satisfi...
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NameError: global name 'unicode' is not defined - in Python 3

... Python 3 renamed the unicode type to str, the old str type has been replaced by bytes. if isinstance(unicode_or_str, str): text = unicode_or_str decoded = False else: text = unicode_or_str.decode(encoding) decoded =...
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pandas: filter rows of DataFrame with operator chaining

... 398 I'm not entirely sure what you want, and your last line of code does not help either, but anyw...
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efficient circular buffer?

...in xrange(20): ... d.append(i) ... >>> d deque([10, 11, 12, 13, 14, 15, 16, 17, 18, 19], maxlen=10) There is a recipe in the docs for deque that is similar to what you want. My assertion that it's the most efficient rests entirely on the fact that it's implemented in C by an incredib...
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How to compare two strings in dot separated version format in Bash?

...; 1) op='>';; 2) op='<';; esac if [[ $op != $3 ]] then echo "FAIL: Expected '$3', Actual '$op', Arg1 '$1', Arg2 '$2'" else echo "Pass: '$1 $op $2'" fi } # Run tests # argument table format: # testarg1 testarg2 expected_relationship ech...
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Concatenating two one-dimensional NumPy arrays

... 388 The line should be: numpy.concatenate([a,b]) The arrays you want to concatenate need to passe...
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Could not find com.google.android.gms:play-services:3.1.59 3.2.25 4.0.30 4.1.32 4.2.40 4.2.42 4.3.23

... | edited Dec 3 '15 at 1:20 CJBS 12.4k55 gold badges6868 silver badges119119 bronze badges a...
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Get Android API level of phone currently running my application [duplicate]

... 2 BASE_1_1 Android 1.1 Petit Four 3 CUPCAKE Android 1.5 Cupcake 4 DONUT Android 1.6 Donut 5 ECLAIR Android 2.0 Eclair 6 EC...
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python numpy machine epsilon

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How can I check which version of Angular I'm using?

...26 Kabb5 3,39822 gold badges2929 silver badges4949 bronze badges answered Apr 15 '13 at 14:35 TheHippoTheHippo...