python-3.7

问题 I am getting the following exception TypeError: An op outside of the function building code is being passed a "Graph" tensor. It is possible to have Graph tensors leak out of the function building context by including a tf.init_scope in your function building code. For example, the following function will fail: @tf.function def has_init_scope(): my_constant = tf.constant(1.) with tf.init_scope(): added = my_constant * 2 The graph tensor has name: conv2d_flipout/divergence_kernel:0 which also

问题 I've been reading up on Python 3.7's dataclass as an alternative to namedtuples (what I typically use when having to group data in a structure). I was wondering if dataclass is compatible with the property decorator to define getter and setter functions for the data elements of the dataclass. If so, is this described somewhere? Or are there examples available? 回答1: It sure does work: from dataclasses import dataclass @dataclass class Test: _name: str="schbell" @property def name(self) -> str:

问题 I've been reading up on Python 3.7's dataclass as an alternative to namedtuples (what I typically use when having to group data in a structure). I was wondering if dataclass is compatible with the property decorator to define getter and setter functions for the data elements of the dataclass. If so, is this described somewhere? Or are there examples available? 回答1: It sure does work: from dataclasses import dataclass @dataclass class Test: _name: str="schbell" @property def name(self) -> str:

问题 When installing Tensorflow it said I was missing a file but i dont know how to fix it and or get that file I have tried re-downloading python but I am still missing the file pip install Tensorflow What I want is for the installation to complete. Here is the error message: C:\Users\MYUSER\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\tensorflow_estimator\python\estimator\canned\linear_optimizer\python\utils\__pycache__

问题 I notice there is a method for the Guild object for fetching all roles of a guild. My problem is that I cannot install discord.py==1.3.0 using pip. Is there another way to get all the guild's roles in discord.py==1.2.3 ? 回答1: Returns a list of the guild’s roles in hierarchy order. The first element of this list will be the lowest role in the hierarchy. Once you have list of roles you can iterate through it and get its name, id etc. Documentation 回答2: Download it here: https://pypi.org/project

问题 I cannot figure out how to apply a row height on an existing worksheet unless I do it one row at a time. This works for a single row: ws4.row_dimensions[14].height = 25 But I want to set the row height for row 7 and any subsequent rows. This approach does nothing yet does not throw an error: for rows in ws4.iter_rows(min_row=7, max_row=None): ws4.row_dimensions.height = 25 wb4.save('C:\\folder\\DataplusRows.xlsx') Any idea how to do this? I can't glean the answer from the openpyxl

问题 I cannot figure out how to apply a row height on an existing worksheet unless I do it one row at a time. This works for a single row: ws4.row_dimensions[14].height = 25 But I want to set the row height for row 7 and any subsequent rows. This approach does nothing yet does not throw an error: for rows in ws4.iter_rows(min_row=7, max_row=None): ws4.row_dimensions.height = 25 wb4.save('C:\\folder\\DataplusRows.xlsx') Any idea how to do this? I can't glean the answer from the openpyxl

问题 In time column, there are values like: Time ======== 59:47 59:52 59:53 59:55 1:00:01 1:00:03 1:00:12 Now, I need to reshape the values like hh:mm:ss I have tried something like this: time_list = df7['Time'].tolist() for i in time_list: print(datetime.strptime(i,'%H:%M:%S')) ValueError: time data ' 36:21' does not match format '%H:%M:%S' 回答1: If you can normalise your values to always be of the form mm:ss or hh:mm:ss , with no additional components to them, then it's as simple as doing

问题 In time column, there are values like: Time ======== 59:47 59:52 59:53 59:55 1:00:01 1:00:03 1:00:12 Now, I need to reshape the values like hh:mm:ss I have tried something like this: time_list = df7['Time'].tolist() for i in time_list: print(datetime.strptime(i,'%H:%M:%S')) ValueError: time data ' 36:21' does not match format '%H:%M:%S' 回答1: If you can normalise your values to always be of the form mm:ss or hh:mm:ss , with no additional components to them, then it's as simple as doing

问题 I am trying to send an email with python, but it keeps saying ssl.SSLError: [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1056) . Here is my code: server = smtplib.SMTP_SSL('smtp.mail.com', 587) server.login("something0@mail.com", "password") server.sendmail( "something0@mail.com", "something@mail.com", "email text") server.quit() Do you know what is wrong? 回答1: That usually happens when the client doesn't understand the ServerHello message that is supposed to come from the server.