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Pandas - Get first row value of a given column
...elect the ith row, use iloc:
In [31]: df_test.iloc[0]
Out[31]:
ATime 1.2
X 2.0
Y 15.0
Z 2.0
Btime 1.2
C 12.0
D 25.0
E 12.0
Name: 0, dtype: float64
To select the ith value in the Btime column you could use:
In [30]: df_test['Btime'].iloc[0]
Out...
How to change letter spacing in a Textview?
... This doesnt actually work when set in the XML. I get an error like this: "1.2dp" in attribute "letterSpacing" cannot be converted to float."
– dopatraman
Jan 16 '16 at 20:19
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Why not use Double or Float to represent currency?
...n told never to represent money with double or float types, and this time I pose the question to you: why?
16 Answer...
Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers
...
import pandas as pd
data = np.array([['col1', 'col2'], [4.8, 2.8], [7.0, 1.2]])
>>> data
array([['col1', 'col2'],
['4.8', '2.8'],
['7.0', '1.2']], dtype='<U4')
Creating data frame
df = pd.DataFrame(i for i in data).transpose()
df.drop(0, axis=1, inplace=True)
df.columns...
What is the most efficient/elegant way to parse a flat table into a tree?
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If you use nested sets (sometimes referred to as Modified Pre-order Tree Traversal) you can extract the entire tree structure or any subtree within it in tree order with a single query, at the cost of inserts being more expensive, as you need to manage ...
How to get line count of a large file cheaply in Python?
...sands of lines) in python. What is the most efficient way both memory- and time-wise?
40 Answers
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Cocoa Touch: How To Change UIView's Border Color And Thickness?
...tly from within the Attributes Inspector.
This sets the User Defined Runtime Attributes for you:
There are two approaches to set this up:
Option 1 (with live updating in Storyboard)
Create MyCustomView.
This inherits from UIView.
Set @IBDesignable (this makes the View update live).*
Set you...
Unable to read data from the transport connection : An existing connection was forcibly closed by th
I have a server app and sometimes, when the client tries to connect, I get the following error:
21 Answers
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How to get numbers after decimal point?
How do I get the numbers after a decimal point?
29 Answers
29
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How to count total lines changed by a specific author in a Git repository?
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Change branch, timeout, and exclude a folder: git fame --branch=dev --timeout=-1 --exclude=Pods/*
– jonmecer
Jul 12 '16 at 6:50
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