WARNING: Security researches have found several poisoned packages on PyPI, including a package named urllib, which will ‘phone home’ when installed. If you used pip install urllib some time after June 2017, remove that package as soon as possible. You can’t, and you don’t need to. urllib2 is the name of the library included in Python 2. You can use the urllib.request library included with … Read more
Solution was linked on reshaped method on documentation page. Insted of Y.reshape(-1,1) you need to use:
bytes objects do not have a __format__ method of their own, so the default from object is used: It just means that you cannot use anything other than straight up, unformatted unaligned formatting on these. Explicitly convert to a string object (as you did by decoding bytes to str) to get format spec support. You … Read more
Maybe you’d like try run pip in Python shell like this: This will install requests package using pip. Because pip is a module in standard library, but it isn’t a built-in function(or module), so you need import it. Other way, you should run pip in system shell(cmd. If pip is in path).
What the error is telling, is that you can’t convert an entire list into an integer. You could get an index from the list and convert that into an integer: If you’re trying to convert a whole list into an integer, you are going to have to convert the list into a string first: If … Read more
In Python 3, map returns a map object not a list: You can convert it into a list then get the length from there:
In Windows, you will have to set the path to the location where you installed Anaconda3 to. For me, I installed anaconda3 into C:\Anaconda3. Therefore you need to add C:\Anaconda3 as well as C:\Anaconda3\Scripts\ to your path variable, e.g. set PATH=%PATH%;C:\Anaconda3;C:\Anaconda3\Scripts\. You can do this via powershell (see above, https://msdn.microsoft.com/en-us/library/windows/desktop/bb776899(v=vs.85).aspx ), or hit the windows … Read more
No, but you can use upside-down floor division:¹ This works because Python’s division operator does floor division (unlike in C, where integer division truncates the fractional part). Here’s a demonstration: Why this instead of math.ceil? math.ceil(a / b) can quietly produce incorrect results, because it introduces floating-point error. For example: In general, it’s considered good practice to avoid … Read more
Python 3 renamed the unicode type to str, the old str type has been replaced by bytes. You may want to read the Python 3 porting HOWTO for more such details. There is also Lennart Regebro’s Porting to Python 3: An in-depth guide, free online. Last but not least, you could just try to use the 2to3 tool to see how that translates the code for you.
You open the variable “file” as a read only then attempt to write to it: Instead, use the ‘w’ flag.