python-2.7

问题 I installed PyDev in Eclipse to run Python programs, but I’m facing trouble importing simplegui . It is showing me this error: import simplegui ImportError : No module named simplegui My installed PyDev version is 2.7.1. 回答1: Did you learn Python using CodeSkulptor? simplegui is a custom module for CodeSkulptor, meaning that it is only available in CodeSkulptor. More information here. 回答2: You can use SimpleGUICS2Pygame. Just change import simplegui by import SimpleGUICS2Pygame

问题 I installed PyDev in Eclipse to run Python programs, but I’m facing trouble importing simplegui . It is showing me this error: import simplegui ImportError : No module named simplegui My installed PyDev version is 2.7.1. 回答1: Did you learn Python using CodeSkulptor? simplegui is a custom module for CodeSkulptor, meaning that it is only available in CodeSkulptor. More information here. 回答2: You can use SimpleGUICS2Pygame. Just change import simplegui by import SimpleGUICS2Pygame

问题 I have some snippets of code that read two csvs and plot them using matplotlib.pyplot and perform polynomial regression on the same two csvs. What I want to be able to do is plot both the data and my polynomial regression on the same graph. import matplotlib.pyplot as plt import csv import numpy as np datax=np.genfromtxt('Delta R.csv') datay=np.genfromtxt('Example R.csv') plt.title ('Test graph ') plt.xlabel('x axis') plt.ylabel('y axis ') plt.plot(datax, datay,'o-') plt.show() and my second

问题 I am using pygraphviz to create graphs for my project. I am unable to figure out how to center the xlabel of nodes and also how to change the color of xlabel. graph.add_node(row[3], color='goldenrod2', style='filled', shape='box', xlabel=round(self.pi_dict.get(row[3]), 2), fontname='calibri') I tried using xlp='10,10!' and xlabelfontcolor='red' . Both attributes don't seem to work. Where am I going wrong. As you can see in the attached fig. above, the xlabel is positioned by default towards

问题 I am using pygraphviz to create graphs for my project. I am unable to figure out how to center the xlabel of nodes and also how to change the color of xlabel. graph.add_node(row[3], color='goldenrod2', style='filled', shape='box', xlabel=round(self.pi_dict.get(row[3]), 2), fontname='calibri') I tried using xlp='10,10!' and xlabelfontcolor='red' . Both attributes don't seem to work. Where am I going wrong. As you can see in the attached fig. above, the xlabel is positioned by default towards

问题 I want to upgrade python's default version i.e /usr/bin/python in Linux. I have multiple python versions installed as /usr/bin/python2.7 /usr/bin/python3.3 However, python command still returns python2.7 # python Python 2.7 Type "help", "copyright", "credits" or "license" for more information. >>> Now, I have installed a module, which got installed in the default version 2.7 . That's why I can't use python3.3 script.py , as it returns error for missing module. How to update this default

问题 This question already has answers here : How to iterate through two lists in parallel? (7 answers) Closed 4 years ago . Is it possible that with the use of list comprehension to iterate through two variables at the same time increasing the loop position in both at the same time. See example below: a = [1,2,3,4,5] b = [6,7,8,9,10] c = [i+j for i in a for j in b] # This works but the output is not what it would be expected. expected output is c = [7, 9, 11, 13, 15] (n'th element from a + n'th

问题 This question already has answers here : How to iterate through two lists in parallel? (7 answers) Closed 4 years ago . Is it possible that with the use of list comprehension to iterate through two variables at the same time increasing the loop position in both at the same time. See example below: a = [1,2,3,4,5] b = [6,7,8,9,10] c = [i+j for i in a for j in b] # This works but the output is not what it would be expected. expected output is c = [7, 9, 11, 13, 15] (n'th element from a + n'th

问题 I've got a sprite group which needs to be drawn in a certain order so its sprites overlap as they should. However even when sorting the group using operator module function (sorted(self.sprites, key=attrgetter('y','x')) the order is wrong. How can I fix this behaviour? 回答1: Straightforwardly, you can't: The Group does not keep sprites in any order, so the draw order is arbitrary. Use an OrderedUpdates group instead: This class derives from pygame.sprite.RenderUpdates - Group class that tracks

问题 How do I pass self.key below into the decorator? class CacheMix(object): def __init__(self, *args, **kwargs): super(CacheMix, self).__init__(*args, **kwargs) key_func = Constructor( memoize_for_request=True, params={'updated_at': self.key} ) @cache_response(key_func=key_func) def list(self, *args, **kwargs): pass class ListView(CacheMix, generics.ListCreateAPIView): key = 'test_key' I get the error: 'self' is not defined 回答1: Here's an example of doing it with a class decorator as I tried to