python-3.5

问题 I have a question with regards to this post: cocktail party algorithm SVD implementation ... in one line of code? I realize there are similar questions to this. However, please note that my particular question takes things in a new direction, inasmuch that I'm looking for a purely Python equivalent. Is this procedure as elegant/simple when written in Python 3.5 (as opposed to the original Octave 'one line of code')? Also include any relevant Python libraries for this kind of application. Of

问题 I saw two other questions like this but they didn't work... So my question is, I have a function, and I'm making another one in which I need to call the first function. I don't have experience in Python, but I know that in languages like Matlab is possible as long as they're in the same directory. A basic example: def square(x): square = x * x (and saved) now in my new function I want to use the function square i tried: def something (y, z) import square something = square(y) + square(z)

问题 I am using doctests. I am wondering what is the correct way to doctest a function that performs an external action (e.g. sends email, connects to a server, etc)? Using Mock seems like the answer but it will muddy up the doc string of the function. For example: class SSHConnection(BaseConnection): """Provides basic SSH functions. >>> host = '127.0.0.1' >>> port = 22 >>> username = 'user' >>> password = 'password' >>> ssh = SSHConnection(host, username, password, port) >>> ssh.execute('uname -a

问题 I got my Raspberry Pi yesterday and I am already trying to code with it. I have a program that I was planning to run on it but it is only compatible with Python versions 3.5.0 or 3.5.1 and everything I find on the internet seems to either be outdated, to do with Python 2 or doesn't relate to my problem as I haven't seen anything else that 100% requires Python 3.5 and can cope with 3.4(currently pre-installed). .exe files don't work on Linux. I am new to the Raspberry Pi and with Linux as I

问题 This question already has answers here : Type hint for a function that returns only a specific set of values (3 answers) Closed 3 months ago . I'm using the new Python 3.5 module typing and it has been joyous. I was wondering how one might specify a type based on an exact string literal. For example, a function is guaranteed to return one of the four strings - "North", "West", "East", "South - how can we express that as a specific type variable, instead of just str . I looked through the

问题 I have a generator of tuples and I need to delete tuples containing same elements. I need this output for iterating. Input = ((1, 1), (1, 2), (1, 3), (3, 1), (3, 2), (3, 3)) Output= ((1, 1), (1, 2), (1, 3)) Order of output doesn't matter. I have checked this question but it is about lists: Delete duplicate tuples with same elements in nested list Python I use generators to achieve fastest results as the data is very large. 回答1: You can normalize the data by sorting it, then add it to a set to

问题 I have a generator of tuples and I need to delete tuples containing same elements. I need this output for iterating. Input = ((1, 1), (1, 2), (1, 3), (3, 1), (3, 2), (3, 3)) Output= ((1, 1), (1, 2), (1, 3)) Order of output doesn't matter. I have checked this question but it is about lists: Delete duplicate tuples with same elements in nested list Python I use generators to achieve fastest results as the data is very large. 回答1: You can normalize the data by sorting it, then add it to a set to

问题 text = browser.find_element_by_css_selector('.dbaListing.listing.lastListing > td:nth-child(4) > span').text This is what I want my webdriver to wait for to be located/visible. How do I do that? 回答1: Use WebDriverWait with the visibility_of_element_located Expected Condition: from selenium.webdriver.common.by import By from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.support import expected_conditions as EC wait = WebDriverWait(browser, 10) element = wait.until

问题 I am trying to create a program that takes in a username and high score, if they are already a user they update to their new high score or just adds the high score if not. My code is: try: a = open("data", "r+") except FileNotFoundError: a = open("data", "w") a = open("data", "r+") b = a.read() user = input("Username: ") user2 = list(user) if user in b: old = input("What is your old highscore? ") new = input("What is your new highscore? ") b2 = b.split() for line in b2: #Where I want to edit.

问题 Recently, I have been reading about the Python source code encoding, especially PEP 263 and PEP 3120. I have the following code: # coding:utf-8 s = 'abc∂´ƒ©' ƒ = 'My name is' ß = '˚ß˙ˆ†ˆ∆ ßå®åø©ˆ' print('s =', s) print('ƒ =', ƒ, 'ß =', ß) This code works fine for Python3 but results in a SyntaxError in Python2.7 . I do understand that this probably might have nothing to do with source code encoding. So, I would like to know if there is a way to support Unicode variable names in Python2. In