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How do I read the first line of a file using cat?
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edited Sep 27 '19 at 15:34
Akaisteph7
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How to make button look like a link?
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362
button {
background: none!important;
border: none;
padding: 0!important;
/*optio...
How to add multiple objects to ManyToMany relationship at once in Django ?
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Use: object.m2mfield.add(*items) as described in the documentation:
add() accepts an arbitrary number of arguments, not a list of them.
add(obj1, obj2, obj3, ...)
To expand that list into arguments, use *
add(*[obj1, obj2, obj3])
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How to select rows that have current day's timestamp?
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John WooJohn Woo
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What do hjust and vjust do when making a plot using ggplot?
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2 Answers
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When saving, how can you check if a field has changed?
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25 Answers
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How to call a Parent Class's method from Child Class in Python?
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edited Mar 11 at 4:22
Jason
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answered Apr ...
Replacing blank values (white space) with NaN in pandas
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12 Answers
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How can I remove the first line of a text file using bash/sed script?
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Try tail:
tail -n +2 "$FILE"
-n x: Just print the last x lines. tail -n 5 would give you the last 5 lines of the input. The + sign kind of inverts the argument and make tail print anything but the first x-1 lines. tail -n +1 would print the w...
How to normalize a NumPy array to within a certain range?
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audio /= np.max(np.abs(audio),axis=0)
image *= (255.0/image.max())
Using /= and *= allows you to eliminate an intermediate temporary array, thus saving some memory. Multiplication is less expensive than division, so
image *= 255.0/image.max() # Uses 1 division and ...