Why is there no tuple comprehension in Python?
You can use a generator expression: but parentheses were already taken for … generator expressions.
Python
Writing string to a file on a new line every time
Use “\n”: See the Python manual for reference.
Haversine Formula in Python (Bearing and Distance between two GPS points)
Here’s a Python version:
Python “SyntaxError: Non-ASCII character ‘\xe2’ in file”
You’ve got a stray byte floating around. You can find it by running where you should replace “x.py” by the name of your program. You’ll see the line number and the offending line(s). For example, after inserting that byte arbitrarily, I got:
python is not recognized windows 10
Make sure the path is in your System PATH variable and not in a User PATH variable. After adding the path to the PATH variable, make sure you close and re-open any command prompts so they use the updated PATH. You should also confirm the path by checking python directly from the folder. The example … Read more
Python: What is the correct MIME type for attaching html file to email
I would encourage you to use a library rather than deal with the -rather unpythonic- built-in mail modules, such as the highly recommended envelopes: https://tomekwojcik.github.io/envelopes/index.html install with: Python code:
Is it possible to decompile a compiled .pyc file into a .py file?
Uncompyle6 works for Python 3.x and 2.7 – recommended option as it’s most recent tool, aiming to unify earlier forks and focusing on automated unit testing. The GitHub page has more details. if you use Python 3.7+, you could also try decompile3, a fork of Uncompyle6 focusing on 3.7 and higher. do raise GitHub issues on these projects if … Read more
What’s the difference between lists enclosed by square brackets and parentheses in Python?
Square brackets are lists while parentheses are tuples. A list is mutable, meaning you can change its contents: while tuples are not: The other main difference is that a tuple is hashable, meaning that you can use it as a key to a dictionary, among other things. For example: Note that, as many people have pointed out, you … Read more
Extract part of a regex match
Use ( ) in regexp and group(1) in python to retrieve the captured string (re.search will return None if it doesn’t find the result, so don’t use group() directly):
Printing variables in Python 3.4
The syntax has changed in that print is now a function. This means that the % formatting needs to be done inside the parenthesis:1 However, since you are using Python 3.x., you should actually be using the newer str.format method: Though % formatting is not officially deprecated (yet), it is discouraged in favor of str.format and will most likely be removed from the language in a coming … Read more