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When to use cla(), clf() or close() for clearing a plot in matplotlib?
...ou have:
import numpy as np
import matplotlib.pyplot as plt
x = np.arange(1000)
y = np.sin(x)
for i in range(5):
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
ax.plot(x, y)
plt.close(fig)
print(plt.get_fignums())
for i in range(5):
fig = plt.figure()
ax = fig.add_subpl...
django admin - add custom form fields that are not part of the model
...e:
class MyModel(models.model):
field1 = models.CharField(max_length=10)
field2 = models.CharField(max_length=10)
def combined_fields(self):
return '{} {}'.format(self.field1, self.field2)
Then in the admin you can add the combined_fields() as a readonly field:
class MyMode...
how to check if a file is a directory or regular file in python? [duplicate]
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answered Jul 8 '10 at 14:48
Jesse JashinskyJesse Jashinsky
9,13755 gold badges3333 silver badges6161 bronze badges
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How to get first N elements of a list in C#?
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I believe this answer is useful even now, 10 years and many C# versions later. For the specific case where you have a list. Especially if you are skipping many items. E.g. you have a list of one million items, and you want a slice of 5 of them, far into the list. Get...
How to save a BufferedImage as a File
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Kartik ChughKartik Chugh
7731010 silver badges2121 bronze badges
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Java: Best way to iterate through a Collection (here ArrayList)
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104
The first one is useful when you need the index of the element as well. This is basically equi...
Java - No enclosing instance of type Foo is accessible
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helloworld922helloworld922
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How Do I Fetch All Old Items on an RSS Feed?
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10
As the other replies here mentioned, a feed may not provide archival data but historical items ...
Reading/parsing Excel (xls) files with Python
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answered May 31 '10 at 12:24
taleinattaleinat
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How can I confirm a database is Oracle & what version it is using SQL?
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