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How do I execute a program from Python? os.system fails due to spaces in path
...
If the first letter after a backslash has special meaning (i.e. \t, \n, etc.) then that particular backslash must be doubled. Being a Windows path has nothing to do with it.
– Ethan Furman
Nov 12 '1...
Postgres and Indexes on Foreign Keys and Primary Keys
...und indices, since those are applied left to right: i.e compound index on [user_id, article_id] on comments table would effectively cover both querying ALL comments by user (e.g. to show aggregated comments log on website) and fetching all comments made by this user for a specific article. Adding a ...
How to use icons and symbols from “Font Awesome” on Native Android Application
... each icon
Download the font
Say, you picked the play icon, assigned the letter 'P' to it, and downloaded the file icomoon.ttf to your asset folder. This is how you show the icon:
xml:
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="4...
Read an Excel file directly from a R script
...eld--think names/addresses, etc.
str3 =
replicate(NN, paste0(sample(LETTERS, sample(10:30, 1L), TRUE),
collapse = "")),
#factor-like string field with 50 "levels"
str4 = sprintf("%05d", sample(sample(1e5, 50L), NN, TRUE)),
#factor-like string field with 17 level...
Flask-SQLalchemy update a row's information
...auth_token_required
def post(self):
json_data = request.get_json()
user_id = current_user.id
try:
userdata = User.query.filter(User.id==user_id).update(dict(json_data))
db.session.commit()
msg={"msg":"User details updated successfully"}
code=200
except...
“Keep Me Logged In” - the best approach
...age to page within the app. In this specific application, I'm storing the user_id , first_name and last_name of the person.
...
Calculate distance between two points in google maps V3
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Guys. Question. Why you like it so much to use 1 letter variable names solving problems that require some imagination where good variable name could be helpful? Just asking :)
– pie6k
Apr 26 '16 at 15:32
...
How do I check if a string is unicode or ascii?
...alid.
>>> u_umlaut = b'\xc3\x9c' # UTF-8 representation of the letter 'Ü'
>>> u_umlaut.decode('utf-8')
u'\xdc'
>>> u_umlaut.decode('ascii')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeDecodeError: 'ascii' codec can't deco...
Regex: match everything but specific pattern
... a negated character class: [^a-z]+ (any char other than a lowercase ASCII letter)
Matching any char(s) but |: [^|]+
Demo note: the newline \n is used inside negated character classes in demos to avoid match overflow to the neighboring line(s). They are not necessary when testing individual strin...
TypeError: 'str' does not support the buffer interface
...IT @Tom
Yes, non-ASCII text is also compressed/decompressed. I use Polish letters with UTF-8 encoding:
plaintext = 'Polish text: ąćęłńóśźżĄĆĘŁŃÓŚŹŻ'
filename = 'foo.gz'
with gzip.open(filename, 'wb') as outfile:
outfile.write(bytes(plaintext, 'UTF-8'))
with gzip.open(filename...