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Combine two columns of text in pandas dataframe
...arter"]
If one (or both) of the columns are not string typed, you should convert it (them) first,
df["period"] = df["Year"].astype(str) + df["quarter"]
Beware of NaNs when doing this!
If you need to join multiple string columns, you can use agg:
df['period'] = df[['Year', 'quarter', ...]].a...
How to round to 2 decimals with Python?
...etting a lot of decimals in the output of this code (Fahrenheit to Celsius converter).
16 Answers
...
How to write a simple Html.DropDownListFor()?
... { 6, "Eggs Benedict"}
};
}
}
In the View convert it to a list for display
@Html.DropDownListFor(m => m.Egg.Keys,
new SelectList(
Model.Egg,
"Key",
"...
Play audio from a stream using C#
... seamlessly. Your code would have to take the compressed audio stream and convert it to small chunks of WAV audio on the fly; this part would be really difficult - all the libraries and components I've ever seen do MP3-to-WAV conversion an entire file at a time. Probably your only realistic chance...
How can I find the number of days between two Date objects in Ruby?
... will have a 1 concatenated to the end. yikes! you may want to use to_i to convert the result to an integer
– jwal
Jan 24 '12 at 18:07
9
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What to use instead of “addPreferencesFromResource” in a PreferenceActivity?
...wer above, after reading an example from Android-er I found you can easily convert your preference activity into a preference fragment. If you have the following activity:
public class MyPreferenceActivity extends PreferenceActivity
{
@Override
protected void onCreate(final Bundle savedInst...
Print multiple arguments in Python
...
#Normal string concatenation
print("sum of", a , "and" , b , "is" , c)
#convert variable into str
print("sum of " + str(a) + " and " + str(b) + " is " + str(c))
# if you want to print in tuple way
print("Sum of %s and %s is %s: " %(a,b,c))
#New style string formatting
print("sum of {} and {}...
How to find out what type of a Mat object is with Mat::type() in OpenCV
...u need to know what type an internal OpenCV array is.
Remember OpenCV will convert the jpeg into BGR (or grey scale if you pass '0' to imread) - so it doesn't tell you anything about the original file.
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Python Progress Bar
...a console progress bar
## Accepts a float between 0 and 1. Any int will be converted to a float.
## A value under 0 represents a 'halt'.
## A value at 1 or bigger represents 100%
def update_progress(progress):
barLength = 10 # Modify this to change the length of the progress bar
status = ""
...
Integrating the ZXing library directly into my Android application
...l. But can u also provide the code, where the reverse can be done. I mean, convert the QR code back to the String?
– Shaon Hasan
May 15 '14 at 15:31
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