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How to use LINQ to select object with minimum or maximum property value
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People.Aggregate((curMin, x) => (curMin == null || (x.DateOfBirth ?? DateTime.MaxValue) <
curMin.DateOfBirth ? x : curMin))
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improv...
How to fix: “UnicodeDecodeError: 'ascii' codec can't decode byte”
How to fix it?
19 Answers
19
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The difference between sys.stdout.write and print?
...ject is sys.stdout, but you can pass a file using the "chevron" form. For example:
print >> open('file.txt', 'w'), 'Hello', 'World', 2+3
See: https://docs.python.org/2/reference/simple_stmts.html?highlight=print#the-print-statement
In Python 3.x, print becomes a function, but it is still...
How do I iterate over an NSArray?
...dard idiom to iterate over an NSArray. My code needs to be suitable for OS X 10.4+.
8 Answers
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How to iterate over rows in a DataFrame in Pandas
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DataFrame.iterrows is a generator which yields both the index and row (as a Series):
import pandas as pd
import numpy as np
df = pd.DataFrame({'c1': [10, 11, 12], 'c2': [100, 110, 120]})
for index, row in df.iterrows():
print(row['c1'], row['c2'])
10 100
11 110
12 120
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Impossible to Install PG gem on my mac with Mavericks
...t a note that you can still use bundler by setting a config env variable: export CONFIGURE_ARGS="with-pg-config=/Applications/Postgres.app/Contents/MacOS/bin/pg_config"
– film42
Nov 16 '13 at 17:47
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How to pick a new color for each plotted line within a figure in matplotlib?
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matplotlib 1.5+
You can use axes.set_prop_cycle (example).
matplotlib 1.0-1.4
You can use axes.set_color_cycle (example).
matplotlib 0.x
You can use Axes.set_default_color_cycle.
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How to remove specific element from an array using python
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You don't need to iterate the array. Just:
>>> x = ['ala@ala.com', 'bala@bala.com']
>>> x
['ala@ala.com', 'bala@bala.com']
>>> x.remove('ala@ala.com')
>>> x
['bala@bala.com']
This will remove the first occurence that matches the string.
EDIT:...
Python list sort in descending order
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In one line, using a lambda:
timestamp.sort(key=lambda x: time.strptime(x, '%Y-%m-%d %H:%M:%S')[0:6], reverse=True)
Passing a function to list.sort:
def foo(x):
return time.strptime(x, '%Y-%m-%d %H:%M:%S')[0:6]
timestamp.sort(key=foo, reverse=True)
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Why use the SQL Server 2008 geography data type?
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If you plan on doing any spatial computation, EF 5.0 allows LINQ Expressions like:
private Facility GetNearestFacilityToJobsite(DbGeography jobsite)
{
var q1 = from f in context.Facilities
let distance = f.Geocode.Distance(jobsite)
where distanc...