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Django TemplateDoesNotExist?
...s
│ │ └── your_app_name
│ │ └── my_index.html
│ ├── urls.py
│ └── views.py
2、Add your app to INSTALLED_APPS.
Modify settings.py
INSTALLED_APPS = [
...
'your_app_name',
...
]
3、Add your app directory to DIRS in TEMP...
Pandas count(distinct) equivalent
...col).strip() for col in grp_df.columns.values]
# if you wish to reset the index
grp_df.reset_index(inplace=True)
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Postgres unique constraint vs index
...st table master with two columns, con_id with unique constraint and ind_id indexed by unique index.
create table master (
con_id integer unique,
ind_id integer
);
create unique index master_unique_idx on master (ind_id);
Table "public.master"
Column | Type | Modifiers
--------+----...
How can I use UUIDs in SQLAlchemy?
...ring representation(36 bytes?), And there seems to be some indication that indexing 16 byte blocks should be more efficient in mysql than strings. I wouldn't expect it to be worse anyway.
One disadvantage I've found is that at least in phpymyadmin, you can't edit records because it implicitly tries...
How to convert index of a pandas dataframe into a column?
...his seems rather obvious, but I can't seem to figure out how to convert an index of data frame to a column?
7 Answers
...
Iterating over all the keys of a map
...t for _, k := range v.MapKeys(), since in your example, k would be the int index of the slice of keys
– Brian Leishman
Apr 23 '19 at 14:05
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What does enctype='multipart/form-data' mean?
...of the URL.
multipart/form-data is significantly more complicated but it allows entire files to be included in the data. An example of the result can be found in the HTML 4 specification.
text/plain is introduced by HTML 5 and is useful only for debugging — from the spec: They are not reliably...
How to add an extra column to a NumPy array
...e vector, for instance duplicate the last column:
b = np.insert(a, insert_index, values=a[:,2], axis=1)
Which leads to:
array([[1, 2, 3, 3],
[2, 3, 4, 4]])
For the timing, insert might be slower than JoshAdel's solution:
In [1]: N = 10
In [2]: a = np.random.rand(N,N)
In [3]: %timeit ...
Precedence and bitmask operations
...
You are actually doing this:
var_dump(0b10 & (0b01 == 0));
var_dump(0b10 & (0b01 != 0));
Try:
var_dump((0b10 & 0b01) == 0);
var_dump((0b10 & 0b01) != 0);
...
How do I create a multiline Python string with inline variables?
...ct)
print(multiline_string)
Also a list can be passed to format(), the index number of each value will be used as variables in this case.
list = ['go',
'now',
'great']
multiline_string = '''I'm will {0} there
I will go {1}
{2}'''.format(*list)
print(multiline_string)
Both s...