python-3.x

Pandas how to read sub headers

由 随声附和 提交于 2021-02-18 13:52:56
问题 I'm using python+pandas to process a csv file. The csv file has multiple headers, like Header1 Header2 Date Subheader1-1 Subheader1-2 Subheader2-1 Subheader2-2 And in raw text format, the csv file content looks like ,Header1,,Header2,,... Date,Subheader1-1,Subheader1-2,Subheader2-1,Subheader2-2,... ... My question is, Does Pandas support this sub-header format? If not, is there a way to read this csv into pandas dataframe and do some calculation on it? (The calculation is like extracting

Why is import cntk as C not working in google colab

由 杀马特。学长 韩版系。学妹 提交于 2021-02-18 12:54:45
问题 I installed opencv version 3.4.4, installed cntk,Importing into google collab gives the following results. import cntk as C /usr/local/lib/python3.6/dist-packages/cntk/cntk_py_init.py:56: UserWarning: Unsupported Linux distribution (ubuntu-18.04). CNTK supports Ubuntu 16.04 and above, only. warnings.warn('Unsupported Linux distribution (%s-%s). CNTK supports Ubuntu 16.04 and above, only.' % (__my_distro__, __my_distro_ver__)) /usr/local/lib/python3.6/dist-packages/cntk/cntk_py_init.py:102:

Difference between Python2 and Python3 while using map with find and index

由 夙愿已清 提交于 2021-02-18 12:44:10
问题 Given a pattern and a string str , find if str follows the same pattern. Here follows means a full match, such that there is a bijection between a letter in pattern and a non-empty word in str . Examples: pattern = "abba" , str = "dog cat cat dog" should return true; dog is a , cat is b and the words form the abba pattern. pattern = "abba" , str = "dog cat cat fish" should return false; the string follows a abbc pattern instead. My solution works in Python 2: def wordPattern(self, pattern,

Python execute playsound in separate thread

由 ╄→尐↘猪︶ㄣ 提交于 2021-02-18 11:42:07
问题 I need to play sound in my python program so that i used playsound module for that. def playy(): playsound('beep.mp3') How can I modify this to run inside main method as a new thread. I need to run this method inside the main method if a condition is true.when it is false thread need to stop 回答1: Use threading library : from threading import Thread T = Thread(target=playy) # create thread T.start() # Launch created thread 回答2: You may not have to worry about using a thread. You can simply

r“string” b“string” u“string” Python 2 / 3 comparison

由 旧巷老猫 提交于 2021-02-18 11:10:50
问题 I already know r"string" in Python 2.7 often used for regex patterns. I also have seen u"string" for, I think, Unicode strings. Now with Python 3 we see b"string" . I have searched for these in different sources / questions, such as What does a b prefix before a python string mean?, but it's difficult to see the big picture of all these strings with prefixes in Python, especially with Python 2 vs 3. Question: would you have a rule of thumb to remember the different types of strings with

BeautifulSoup.find_all() method not working with namespaced tags

由 我是研究僧i 提交于 2021-02-18 10:59:12
问题 I have encountered a very strange behaviour while working with BeautifulSoup today. Let's have a look at a very simple html snippet: <html><body><ix:nonfraction>lele</ix:nonfraction></body></html> I am trying to get the content of the <ix:nonfraction> tag with BeautifulSoup. Everything works fine when using the find method: from bs4 import BeautifulSoup html = "<html><body><ix:nonfraction>lele</ix:nonfraction></body></html>" soup = BeautifulSoup(html, 'lxml') # The parser used here does not

How do you send arguments to a generator function using tf.data.Dataset.from_generator()?

由 最后都变了- 提交于 2021-02-18 10:24:05
问题 I would like to create a number of tf.data.Dataset using the from_generator() function. I would like to send an argument to the generator function ( raw_data_gen ). The idea is that the generator function will yield different data depending on the argument sent. In this way I would like raw_data_gen to be able to provide either training, validation or test data. training_dataset = tf.data.Dataset.from_generator(raw_data_gen, (tf.float32, tf.uint8), ([None, 1], [None]), args=([1])) validation

How can I get the default colors in GTK?

由 筅森魡賤 提交于 2021-02-18 10:14:57
问题 Context In GTK 3, people can set their own themes. Even the default theme (Adwaita) is provided with two variants: a light one and a dark one. As I am writing my own widget (in python), I need to get these colors in order to avoid drawing black on black or white on white. Question How can I access the default colors of the user GTK theme? Things that don't work GtkSettings used to provide an acceptable gtk-theme-color property, but it is not there anymore and there is no reference in the doc

How can I get the default colors in GTK?

由 烂漫一生 提交于 2021-02-18 10:14:16
问题 Context In GTK 3, people can set their own themes. Even the default theme (Adwaita) is provided with two variants: a light one and a dark one. As I am writing my own widget (in python), I need to get these colors in order to avoid drawing black on black or white on white. Question How can I access the default colors of the user GTK theme? Things that don't work GtkSettings used to provide an acceptable gtk-theme-color property, but it is not there anymore and there is no reference in the doc

How can I get the default colors in GTK?

由 馋奶兔 提交于 2021-02-18 10:13:15
问题 Context In GTK 3, people can set their own themes. Even the default theme (Adwaita) is provided with two variants: a light one and a dark one. As I am writing my own widget (in python), I need to get these colors in order to avoid drawing black on black or white on white. Question How can I access the default colors of the user GTK theme? Things that don't work GtkSettings used to provide an acceptable gtk-theme-color property, but it is not there anymore and there is no reference in the doc
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