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How do I execute a string containing Python code in Python?
How do I execute a string containing Python code in Python?
14 Answers
14
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How to return a part of an array in Ruby?
With a list in Python I can return a part of it using the following code:
6 Answers
6
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Android ViewPager - Show preview of page on left and right
...), so you should do something like:
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent" <-- this!
app:cardCorn...
CSV in Python adding an extra carriage return, on Windows
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Python 3:
As described by YiboYang, set newline=''
with open('output.csv', 'w', newline='') as f:
writer = csv.writer(f)
...
As noted in the comments by CoDEmanX, set newline='\n'
with open('output.csv', 'w',...
Filter dict to contain only certain keys?
...Uses dictionary comprehension.
If you use a version which lacks them (ie Python 2.6 and earlier), make it dict((your_key, old_dict[your_key]) for ...). It's the same, though uglier.
Note that this, unlike jnnnnn's version, has stable performance (depends only on number of your_keys) for old_dicts...
hexadecimal string to byte array in python
...thing like
>>> hex_string = "deadbeef"
Convert it to a string (Python ≤ 2.7):
>>> hex_data = hex_string.decode("hex")
>>> hex_data
"\xde\xad\xbe\xef"
or since Python 2.7 and Python 3.0:
>>> bytes.fromhex(hex_string) # Python ≥ 3
b'\xde\xad\xbe\xef'
&g...
How to get POSTed JSON in Flask?
...
For reference, here's complete code for how to send json from a Python client:
import requests
res = requests.post('http://localhost:5000/api/add_message/1234', json={"mytext":"lalala"})
if res.ok:
print res.json()
The "json=" input will automatically set the content-type, as discu...
Django: How to manage development and production settings?
...Django documentation:
The value of DJANGO_SETTINGS_MODULE should be in Python path syntax, e.g. mysite.settings. Note that the settings module should be on the Python import search path.
So, let's assume you created myapp/production_settings.py and myapp/test_settings.py in your source reposit...
How to extract the year from a Python datetime object?
I would like to extract the year from the current date using Python.
4 Answers
4
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Android Studio: Android Manifest doesn't exists or has incorrect root tag
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Moving my AndroidManifest.xml to PROJECT_NAME/src/main fixed the issue.
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