python-3.x

问题 i have 2 charts and i want it to display side by side . Barchart and piechart side by side and probably the same barchart below these 2 charts.i have tried a lot and i would really appreciate some help. this is the below code import dash import dash_core_components as dcc import dash_html_components as html import plotly.graph_objs as go from dash.dependencies import Output, Input, State import numpy as np import pandas as pd import plotly.figure_factory as ff from pandas import read_excel

问题 i = 11 print(i.to_bytes(1,'big')) b'\x0b' i = 10 print(i.to_bytes(1,'big')) b'\n' It should be b'\x0a' Why i got b'\n'? 回答1: Well, as khelwood also explained in his comment, at roughly the same time, here's the deal: As the newline character has a "c-style shorthand", namely \n , and also a numerical value of 0x0a, or 10 in decimal, these representations are equivalent. It's only that Python decides to show you the traditional escape sequence. To be fair, character 11, or 0x0b is the vertical

问题 This question already has answers here : python: how to get information about a function? (4 answers) Closed 6 years ago . whenever I use help() on a method I get a weird looking output. For example, help(obj.readline) gives me the following output: Help on built-in function readline: readline(...) That's all i get. I don't know how to interpret it.Why there is no description about the method? Can somebody please explain to me what's going on? 回答1: Is this weird output? >>> f = open('data.txt

问题 i = 11 print(i.to_bytes(1,'big')) b'\x0b' i = 10 print(i.to_bytes(1,'big')) b'\n' It should be b'\x0a' Why i got b'\n'? 回答1: Well, as khelwood also explained in his comment, at roughly the same time, here's the deal: As the newline character has a "c-style shorthand", namely \n , and also a numerical value of 0x0a, or 10 in decimal, these representations are equivalent. It's only that Python decides to show you the traditional escape sequence. To be fair, character 11, or 0x0b is the vertical

问题 i = 11 print(i.to_bytes(1,'big')) b'\x0b' i = 10 print(i.to_bytes(1,'big')) b'\n' It should be b'\x0a' Why i got b'\n'? 回答1: Well, as khelwood also explained in his comment, at roughly the same time, here's the deal: As the newline character has a "c-style shorthand", namely \n , and also a numerical value of 0x0a, or 10 in decimal, these representations are equivalent. It's only that Python decides to show you the traditional escape sequence. To be fair, character 11, or 0x0b is the vertical

问题 I'm trying to figure out how to check an entire column to verify all values are integers, except one, using python pandas. One row name will always have a float num. CSV example: name, num random1,2 random2,3 random3,2.89 random4,1 random5,3.45 In this example, let's say 'random3's num will always be a float. So that fact that random5 is also a float, means the program should print an error to the terminal telling the user this. 回答1: Try this: if len(df.num.apply(type) == float) >= 2: print(f

问题 i try to do the following: Download a PDF file to memory Convert the first page to an image Use that image with tweepy I tried the following code, but run into an error. from PIL import Image from pdf2image import convert_from_path from urllib.request import urlopen from io import StringIO, BytesIO url = 'http://somedomain.com/assets/applets/internet.pdf' scrape = urlopen(url) # for external files pdfFile = BytesIO(scrape.read()) pdfFile.seek(0) pages = convert_from_path(pdfFile,last_page=1,

问题 I'm checking a python library: requests-html. Looks interesting, easy and clear scraping. However, I'm not sure how to render a page with infinite scrolling. From their documentation I understand that I should render a page with special attribute (scrolldown). I'm trying but I do not know how exactly. I know how to use selenium to handle infinite scroll, but I wonder whether it is possible with requests-html. from requests_html import HTML, HTMLSession page1 = session.get(url1) page1.html

问题 This question already has answers here : matching parentheses in python regular expression (3 answers) Closed 1 year ago . I have a txt file containing strings as: A 123 B 456 Ab(123) ...... I wish to search Ab(123) in txt file. What I have tried : re.search(r'Ab(123)',string) 回答1: There are 12 characters with special meanings, you escape to its literal meaning with \ in front of it. re.search(r'Ab\(123\)',string) # or re.findall(r'Ab\(123\)',string) Look up https://regex101.com/r/1bb8oz/1

问题 I'm getting this error in a google colab notebook. Do I need to install something or it's just not possible to use pypy inside colab? I've tried this simple script: %%pypy print("hello") # Couldn't find program: 'pypy' If I run %lsmagic the output is the following, in which pypy is present. Available line magics: %alias %alias_magic %autocall %automagic %autosave %bookmark %cat %cd %clear %colors %config %connect_info %cp %debug %dhist %dirs %doctest_mode %ed %edit %env %gui %hist %history