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Why are floating point numbers inaccurate?
...gnificand). A very simple number, say 9.2, is actually this fraction:
5179139571476070 * 2 -49
Where the exponent is -49 and the mantissa is 5179139571476070. The reason it is impossible to represent some decimal numbers this way is that both the exponent and the mantissa must be integers. In ...
ValueError: math domain error
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134
Your code is doing a log of a number that is less than or equal to zero. That's mathematically...
What is the difference between join and merge in Pandas?
...:
import pandas as pd
left = pd.DataFrame({'key': ['foo', 'bar'], 'val': [1, 2]}).set_index('key')
right = pd.DataFrame({'key': ['foo', 'bar'], 'val': [4, 5]}).set_index('key')
left.join(right, lsuffix='_l', rsuffix='_r')
val_l val_r
key
foo 1 4
bar 2 5
The ...
How to filter a dictionary according to an arbitrary condition function?
... comprehension:
{k: v for k, v in points.iteritems() if v[0] < 5 and v[1] < 5}
And in Python 3:
{k: v for k, v in points.items() if v[0] < 5 and v[1] < 5}
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Invalid date format specification in gemspec
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18 Answers
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How to format numbers by prepending 0 to single-digit numbers?
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jQuery's jquery-1.10.2.min.map is triggering a 404 (Not Found)
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11 Answers
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Getting list of lists into pandas DataFrame
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271
Call the pd.DataFrame constructor directly:
df = pd.DataFrame(table, columns=headers)
df
He...
Convert string to number and add one
...hing() function to use. When I tried this and the value is one I get back 11 not 2.
13 Answers
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