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how do you filter pandas dataframes by multiple columns
...one from @redreamality):
import pandas as pd
import numpy as np
length = 100_000
df = pd.DataFrame()
df['Year'] = np.random.randint(1950, 2019, size=length)
df['Gender'] = np.random.choice(['Male', 'Female'], length)
%timeit df.query('Gender=="Male" & Year=="2014" ')
%timeit df[(df['Gender']=...
How do API Keys and Secret Keys work? Would it be secure if I have to pass my API and secret keys to
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answered Apr 20 '10 at 19:31
benben
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PHP Error handling: die() Vs trigger_error() Vs throw Exception
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Linus KleenLinus Kleen
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Explanation of JSHint's Bad line breaking before '+' error
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108
It's a style guide to avoid statements that could be liable to assumptions about automatic sem...
Difference between ProcessBuilder and Runtime.exec()
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Eugene LopatkinEugene Lopatkin
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2
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How does Spring Data JPA differ from Hibernate for large projects?
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104
So, spring-data does some extra magic that helps with complex queries. It is strange at first ...
How to print formatted BigDecimal values?
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answered Aug 3 '10 at 11:01
Luca MolteniLuca Molteni
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PHP code to remove everything but numbers
...hris Eberle
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How does clipsToBounds work?
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If my superview is a box measuring 10 units on each side, and my subview is 20 units wide, with clipsToBounds set to YES, I'll only see the part of the subview that fits within the bounds of the superview. Otherwise, if clipsToBounds is set to NO, I'll see th...
How do I pull files from remote without overwriting local files?
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edited Mar 19 '14 at 8:10
Amol Ghotankar
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answ...