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How to take column-slices of dataframe in pandas
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Careful that ranges in pandas include both end points, ie >>>data.ix[:, 'a':'c'] a b c 0 0.859192 0.881433 0.843624 1 0.744979 0.427986 0.177159
– grasshopper
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For every character in string
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Looping through the characters of a std::string, using a range-based for loop (it's from C++11, already supported in recent releases of GCC, clang, and the VC11 beta):
std::string str = ???;
for(char& c : str) {
do_things_with(c);
}
Looping through the characters of a std...
Immutable vs Mutable types
...n that are of immutable type:
int
float
decimal
complex
bool
string
tuple
range
frozenset
bytes
Some Unanswered Questions
Questions: Is string an immutable type?
Answer: yes it is, but can you explain this:
Proof 1:
a = "Hello"
a +=" World"
print a
Output
"Hello World"
In the above example the ...
What is the difference between UTF-8 and Unicode?
...the dominant language in computing at the time, i.e. English, into numbers ranging from 0 to 127 (7 bits). With 26 letters in the alphabet, both in capital and non-capital form, numbers and punctuation signs, that worked pretty well. ASCII got extended by an 8th bit for other, non-English languages,...
jQuery Date Picker - disable past dates
I am trying to have a date Range select using the UI date picker.
16 Answers
16
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How to determine whether a substring is in a different string
...d_sub_string(word, string):
len_word = len(word) #returns 3
for i in range(len(string)-1):
if string[i: i + len_word] == word:
return True
else:
return False
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How to pip install a package with min and max version range?
...uestions%2f8795617%2fhow-to-pip-install-a-package-with-min-and-max-version-range%23new-answer', 'question_page');
}
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Changing the color of the axis, ticks and labels for a plot in matplotlib
...otlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(range(10))
ax.set_xlabel('X-axis')
ax.set_ylabel('Y-axis')
ax.spines['bottom'].set_color('red')
ax.spines['top'].set_color('red')
ax.xaxis.label.set_color('red')
ax.tick_params(axis='x', colors='red')
plt.show()
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In Vim, is there a way to paste text in the search line?
... contents of the "a" register from Vim's Ex command line with:
:[OPTIONAL_RANGE]@a
I use it all the time.
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Storing time-series data, relational or non?
...of inserts, while reads are column based (in most cases you want to read a range of data from a specific column, representing a metric)
I have found Columnar Databases (google it, you'll find MonetDB, InfoBright, parAccel, etc) are doing terrific job for time series.
As for your question, which p...