大约有 45,000 项符合查询结果（耗时：0.0549秒） [XML]
Substitute multiple whitespace with single whitespace in Python [duplicate]
...
A simple possibility (if you'd rather avoid REs) is
' '.join(mystring.split())
The split and join perform the task you're explicitly asking about -- plus, they also do the extra one that you don't talk about but is seen in your example, removin...
How to get nice formatting in the Rails console
...
Its now YAML::ENGINE.yamler = 'psych'
– jumpa
Dec 5 '13 at 5:53
...
In MySQL, can I copy one row to insert into the same table?
...y = NULL;
INSERT INTO table SELECT * FROM tmptable_1;
DROP TEMPORARY TABLE IF EXISTS tmptable_1;
As a temp table, there should never be more than one record, so you don't have to worry about the primary key. Setting it to null allows MySQL to choose the value itself, so there's no risk of creating...
Add Text on Image using PIL
...ile should be present in provided path.
font = ImageFont.truetype("sans-serif.ttf", 16)
So your code will look something similar to:
from PIL import Image
from PIL import ImageFont
from PIL import ImageDraw
img = Image.open("sample_in.jpg")
draw = ImageDraw.Draw(img)
# font = ImageFont.truetype...
pydot and graphviz error: Couldn't import dot_parser, loading of dot files will not be possible
...on of pyparsing:
pip install pyparsing==1.5.7
pip install pydot==1.0.28
If you did not install pyparsing using pip, but instead used setup.py, then have a look at this solution to uninstall the package. Thanks @qtips.
sha...
How do I check if a list is empty?
For example, if passed the following:
27 Answers
27
...
Is there an expression for an infinite generator?
...te itertools.count: count = lambda start=0, step=1: (start + i*step for i, _ in enumerate(iter(int, 1)))
– Coffee_Table
Aug 13 '18 at 23:43
2
...
Concatenating two one-dimensional NumPy arrays
...
@user391339, what if you wanted to concatenate three arrays? The function is more useful in taking a sequence then if it just took two arrays.
– Winston Ewert
Jul 12 '16 at 17:13
...
How to loop through all the properties of a class?
... there is no "System.Reflection" entry in the list
Edit: You can also specify a BindingFlags value to type.GetProperties():
BindingFlags flags = BindingFlags.Public | BindingFlags.Instance;
PropertyInfo[] properties = type.GetProperties(flags);
That will restrict the returned properties to publi...
Get the first element of each tuple in a list in Python [duplicate]
...
If you don't want to use list comprehension by some reasons, you can use map and operator.itemgetter:
>>> from operator import itemgetter
>>> rows = [(1, 2), (3, 4), (5, 6)]
>>> map(itemgetter(1), ...