python-2.7

问题 I can't seem to get this to work. I am trying to send daily a given file, whose name is like 'file_{{ds_nodash}}.csv'. The problem is that I can't seem to add this name as the filename, since it seems it cant be used. In the text of the email or the subject works perfectly, not not on the name. Here is the dag as an example: local_file = 'file-{{ds_nodash}}.csv' send_stats_csv = EmailOperator( task_id='send-stats-csv', to=['email@gmail.com'], subject='Subject - {{ ds }}', html_content='Here

问题 Why is the code below termed 'age-old disapproved method' of printing in the comment by 'Snakes and Coffee' to Blender's post of Print multiple arguments in python? Does it have to do with the backend code/implementation of Python 2 or Python 3? print("Total score for " + str(name) + " is " + str(score)) 回答1: Adding many strings is disapproved because: it's not really readable, compared to the alternatives. it's not as efficient as the alternatives. if you have other types you have to

问题 The below code works perfectly for python 2.7.13 import os with open('random.bin','w') as f: f.write(os.urandom(10)) But throws error for python 3 3.6.0 |Anaconda 4.3.0 (64-bit)| (default, Dec 23 2016, 11:57:41) [MSC v.1900 64 bit (AMD64)] Traceback (most recent call last): File "C:/Users/hsingh/PycharmProjects/Item3.py", line 3, in f.write(os.urandom(10)) TypeError: write() argument must be str, not bytes Any reason why there is difference in behaviour or how to fix this 回答1: In Python 3 it

问题 The below code works perfectly for python 2.7.13 import os with open('random.bin','w') as f: f.write(os.urandom(10)) But throws error for python 3 3.6.0 |Anaconda 4.3.0 (64-bit)| (default, Dec 23 2016, 11:57:41) [MSC v.1900 64 bit (AMD64)] Traceback (most recent call last): File "C:/Users/hsingh/PycharmProjects/Item3.py", line 3, in f.write(os.urandom(10)) TypeError: write() argument must be str, not bytes Any reason why there is difference in behaviour or how to fix this 回答1: In Python 3 it

问题 The below code works perfectly for python 2.7.13 import os with open('random.bin','w') as f: f.write(os.urandom(10)) But throws error for python 3 3.6.0 |Anaconda 4.3.0 (64-bit)| (default, Dec 23 2016, 11:57:41) [MSC v.1900 64 bit (AMD64)] Traceback (most recent call last): File "C:/Users/hsingh/PycharmProjects/Item3.py", line 3, in f.write(os.urandom(10)) TypeError: write() argument must be str, not bytes Any reason why there is difference in behaviour or how to fix this 回答1: In Python 3 it

问题 I'm trying to make something that runs when audio is detected from a windows application. Is there any way to do this using python. I'm running on python 2.7.12 but I'm willing to update if necessary. I'm also fine with detecting any sound at all coming from the computer. Thanks a lot. 回答1: take a look at http://python-sounddevice.readthedocs.io/en/0.3.4/#sounddevice.RawInputStream You could use this to detect audio to and from the sound card of the computer. The particular class is one way

问题 I installed libtiff successfully in python 2.7 using "pip install libtiff". It successfully installed the libtiff-0.4.0 package. But when I am importing the package using "import libtiff".I get an error which is: Traceback (most recent call last): File "D:/Python/p1.py", line 1, in <module> import libtiff File "D:\Python\lib\site-packages\libtiff\__init__.py", line 20, in <module> from .libtiff_ctypes import libtiff, TIFF, TIFF3D File "D:\Python\lib\site-packages\libtiff\libtiff_ctypes.py",

问题 I installed libtiff successfully in python 2.7 using "pip install libtiff". It successfully installed the libtiff-0.4.0 package. But when I am importing the package using "import libtiff".I get an error which is: Traceback (most recent call last): File "D:/Python/p1.py", line 1, in <module> import libtiff File "D:\Python\lib\site-packages\libtiff\__init__.py", line 20, in <module> from .libtiff_ctypes import libtiff, TIFF, TIFF3D File "D:\Python\lib\site-packages\libtiff\libtiff_ctypes.py",

问题 how can I slice a 3x3 shape numpy array in periodic conditions. for example, for simplicity its in one dimension: import numpy as np a = np.array(range(10)) if the slice is within the length of the array it is straightforward sub = a[2:8] the result is array([2, 3, 4, 5, 6, 7]) . Now if I need to slice from 7 to 5 ... sub = a[7:5] the result is obviously array([], dtype=int32) . But what I need is array([7,8,9,0,1,2,3,4]) Is there any efficient way to do so ? 回答1: I think what you're looking

问题 I've been trying to convert this specific date format to a string in Python like so: datetime.strptime(‘2017-01-12T14:12:06.000-0500’,'%Y-%m-%dT%H:%M:%S.%f%Z') But it doesn't work. What am I doing wrong? 回答1: Solution for Python 2.7 From the comments it became clear that OP needs a solution for Python 2.7. Apparently, there's no %z in strptime for python 2.7 even though the documentation claims the contrary, the raised error is ValueError: 'z' is a bad directive in format '%Y-%m-%dT%H:%M:%S