我正在处理一个python项目,面对一个问题,我有一个代码片段,如下面所示:
if published_to is not '*':
if 'T00:00:00.000Z' not in published_to:
published_to = published_to.replace('T00:00:00.000Z', '')
published_to = published_to.split('-')[::-1]
published_to = '-
我在python中编写了一些带有类型注释的代码。我对可选类型有问题。例如,对于这样的代码:
maybe_number : Optional[int] = ... # definition
if maybe_number == None:
...
else:
# I know its int because i checked, but it is a typechecking error
number : int = maybe_number
...
我得到了错误:
Incompatible types in assignment (expression h
我打开一个16mb的简单txt文件,用mplotlib显示一个图形。在IDLE中运行python文件需要7秒来显示图表。在VS代码中需要17秒。对于一个55mb的文件,分别需要17秒和53秒。 为什么VS Code速度较慢,如何获得与IDLE类似的速度? 代码: import numpy as np
import matplotlib.pyplot as plt
import time as time
time, v_out, v_in = np.loadtxt('PS_SIM.txt', unpack=True, skiprows=1)
plt.plot(time, v
我有以下简单的程序: from pathos.core import connect
tunnel = connect('192.168.1.5', port=50004)
print(tunnel)
print(type(tunnel._lport))
print(tunnel._rport)
def sleepy_squared(x):
from time import sleep
sleep(1.0)
return x**2
from pathos.pp import ParallelPythonPool as Pool
p = Pool
我是一个编程新手,在编写代码来回答我正在阅读的初学者书中的练习时,我忘记了在字符串quit (在第6行)上加引号,该字符串应该用来测试用户是否想要退出无限循环;但它并没有因为没有定义变量而给出错误,它只是运行而没有任何错误。
prompt = "\n Please enter the name of a city you have visited:"
prompt+="\n(Enter 'quit' when you are finished.)"
while True:
city = str(input(prompt))
if