我是Python新手,所以请宽恕我。我的环境是:
macOS Sierra 10.12.4 and Anaconda 4.3.16
我必须遵循以下代码:
import os,
import urllib.request
IRIS_TRAINING = "iris_training.csv"
IRIS_TRAINING_URL = "http://download.tensorflow.org/data/iris_training.csv"
if not os.path.exists(IRIS_TRAINING):
raw = urllib.req
我用python编写了这段代码来计算python中每个单词的出现数。我只想用for循环来完成这个任务。没有其他内置的数据类型像集合或字典。我想我做错了缩痕。
mystring="Virat plays cricket. Virat is a batsman."
mylist=mystring.split(' ')
j=0
#the i outer loop that will iterate each element in list
for i in range(0,len(mylist)):
count=1
'''the j loop
我有这样的数据:
Time Rain1Hour Rain6Hour
0 0 NaN
1 1 NaN
2 1 NaN
3 1 NaN
4 1 NaN
5 1 NaN
6 1 NaN
7 0 NaN
其中,Rain1Hour是最后一个小时的雨,而Rain6Hour是最后6个小时的累积雨,这意味着我要使用Rain1Hour列的数据,最后6小时的降雨量之和。如何用来自Rain6Hour的数据填充列Rain1Hour。我想要的是:
我想在本地系统中备份svn目录,在AndroidStudio中备份import。
所以我使用这个命令:
svnadmin hotcopy ~/svn_directory ~/Desktop/
这造成了错误:
svnadmin: E000002: Can't open file '/home/kushalgandhi/svn_directory/format': No such file or directory
我签了svn_directory,但是没有格式文件夹。为什么命令要搜索不存在的format命名文件夹?
以上错误的原因是什么?
我对蟒蛇很陌生。我需要使用以下功能来模拟雨池中的简单水平衡:
def rain_tank_model(rain, water_demand,roof_area, tank_size, household_name):
# rain and water_demand time series are numpy arrays with over than 8 million recordings.
# each houshold has installed a rain tank with a specific size
v = [] # water volume