大约有 5,685 项符合查询结果（耗时：0.0307秒） [XML]
How to color System.out.println output? [duplicate]
...DR
java: System.out.println((char)27 + "[31m" + "ERROR MESSAGE IN RED");
python: print(chr(27) + "[31m" + "ERROR MESSAGE IN RED")
bash or zsh: printf '\x1b[31mERROR MESSAGE IN RED'
this may also work for Os X: printf '\e[31mERROR MESSAGE IN RED'
sh: printf 'CTRL+V,CTRL+[[31mERROR MESSAGE IN RED...
Check if a program exists from a Makefile
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is this what you did?
check: PYTHON-exists
PYTHON-exists: ; @which python > /dev/null
mytarget: check
.PHONY: check PYTHON-exists
credit to my coworker.
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Change IPython/Jupyter notebook working directory
When I open a Jupyter notebook (formerly IPython) it defaults to C:\Users\USERNAME .
31 Answers
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Adding new column to existing DataFrame in Python pandas
I have the following indexed DataFrame with named columns and rows not- continuous numbers:
24 Answers
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How to get all possible combinations of a list’s elements?
... of 15 items. In fact, an example implementation is given on the standard python "itertools" doc page: docs.python.org/library/itertools.html (grep for "powerset").
– Dan H
Nov 16 '11 at 17:45
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How bad is shadowing names defined in outer scopes?
...s NameError if you didn't have a global name data.
Also remember that in Python everything is an object (including modules, classes and functions) so there's no distinct namespaces for functions, modules or classes. Another scenario is that you import function foo at the top of your module, and us...
Check if all elements in a list are identical
...l1 stops as soon as a difference is found.
Since checkEqual1 contains more Python code, it is less efficient when many of the items are equal in the beginning.
Since checkEqual2 and checkEqual3 always perform O(N) copying operations, they will take longer if most of your input will return False.
For...
What is the difference between Sublime text and Github's Atom [closed]
...aScript/HTML/CSS.
Sublime Text is a commercial product, built on C/C++ and Python.
Comparable to Atom is Adobe Brackets, another open source text editor/IDE built on JavaScript/HTML/CSS. Be minded that this makes Brackets more oriented towards Web development, specially in the front end.
Advantages ...
Getting the SQL from a Django QuerySet [duplicate]
...write sql query for retrieve value from the table.
– Python Team
Nov 17 '14 at 7:10
add a com...
Designing function f(f(n)) == -n
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How about:
f(n) = sign(n) - (-1)n * n
In Python:
def f(n):
if n == 0: return 0
if n >= 0:
if n % 2 == 1:
return n + 1
else:
return -1 * (n - 1)
else:
if n % 2 == 1:
return n - 1
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