现代Fortran语言中面向数组的特征包含两类特定的流程控制结构。我们都知道,对于标量而言,可以通过使用if,case和do产生更加紧凑的代码。对于数组而言,where、forall以及do concurrent结构可以用来简化数组表达,并能避免手动扩展表达式的麻烦。作为一般说明,这些结构都可以被命名或者嵌套。下面先简要介绍下where结构。
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I want to replicate what where clause does in SQL, using Python. Many times conditions in where clause can be complex and have multiple conditions. I am able to do it in the following way. But I think there should be a smarter way to achieve this. I have following data and code. 我...
Where do Indian pythons live?Brief Overview of Indian Pythons:Indian pythons are constrictors. Constrictors are a type of snake that wraps themselves around their prey and squeezes their coils to stop blood flow in the victim. Indian pythons are non-venomous snakes. They can get quite large....
Python - Numpy "where" with multiple conditions, I try to use np.where from numpy, but I see that numpy.where(condition[, x, y]) treat only two condition not 3 like in my case. Any idea to help me please? I like to keep the code clean. That's why I prefer np.vectorize for ...
Printing object attributes based on user input in Python 3x First of all I'd like to say im a Python beginner (or programming beginner for that matter) and I'm trying to figure out how to print attributes from a object based on user input. This is the code I h......
REF块输出的共模电压为5/9*Vs=1.83V2、确定内部V-I转换电路无电流输出时候的DC偏置电压值,调整加载Test_in脚的DC电压VIN1,使得VIN1=OUT=OUTN=1.83V 3、对于...25Ω电阻而产生小幅度的衰减,假定外部负载远大于25Ω, 那么此处的衰减就会很小可以忽略不计。 4、设置Test_in脚DC偏置电压为(VIN1+VIN2)/2,...
Thasneem Mohamed If you read problem statement properly and do step by step then you can solve easily by doing this: if year % 4 == 0: if year % 100 == 0: if year % 400 == 0: print ("Leap year") else: print ("Not a leap year") else: print ("Leap year") else: print...
Example:Say, we have a Python Pandas Dataframe, and we want to label our data with some values based on other columns. We can use thenp.where()in Pandas Python to do so. import numpy as np import pandas as pd df = pd.DataFrame({ ...
You don't need to know how to write code in order to help! Roadmap The full roadmap is available on the project site. Community The main meeting points for the community are: the Project Forum; the Chat Room (#indico on Libera.Chat or on Matrix). We follow CERN's Values and the ...