for-loop

问题 I am trying to generate varying length N and C termini Slices (1,2,3,4,5,6,7). But before I get there I am having problems just reading in my fasta files. I was following the 'Random subsequences' head tutorial from:https://biopython.org/wiki/SeqIO . But in this case there is only one sequence so maybe that is where I went wrong. The code with example sequences and my errors. Any help would be much appreciated. I am clearly out of my depth. It looks like there are a lot of similar problems

问题 I am trying to generate varying length N and C termini Slices (1,2,3,4,5,6,7). But before I get there I am having problems just reading in my fasta files. I was following the 'Random subsequences' head tutorial from:https://biopython.org/wiki/SeqIO . But in this case there is only one sequence so maybe that is where I went wrong. The code with example sequences and my errors. Any help would be much appreciated. I am clearly out of my depth. It looks like there are a lot of similar problems

问题 I am trying to extract specific lines from a .txt file, corresponding to 7 particular devices (0-6), and then operate on that data. Here is an example: From a very large file, I extract an event (here 169139), which contains information from 6 of the 7 devices (here just 1,2,3,4,5,6 because Device 0 has no data). For each such event, I don't know a priori, how many devices will give active as their output. It can be all, it can be none, or it can be some. === 169139 === Start: 4.80374e+19 End

问题 I'm implementing a image downloader because I want display them from client and not from URLs, inside a class I have a method that takes URLs from a datafile and then download them in samefolder. messaggi[] array is a result of reading datafile and I simplify in this snippet declaring it (of course in my code isn't declared as you see but it absolutly works as this result). the problem is that in this snippet doesn't arrive to download images and sometimes just download 1 of them and is

问题 The following code I wrote in JavaScript, but I'm trying to convert it into something Python can understand, specifically the for loop . I tried reading up on how the for loop syntax in Python reads, but I just can't seem to wrap my head around it, since it's very different to its equivalent in many popular web dev languages. Can someone explain to how it's written and how it work, preferably in simple terms. Thank you!! name = prompt("enter a name"); for (var i = 0; i < name.length; i++) {

问题 I'm trying to create an array based on values from another data frame in Python. I want it to fill the array as such. If x > or = 3 in the dataframe then it inputs a 0 in the array. If x < 3 in the dataframe then it inputs a 1 in the array. If x = 0 in the dataframe then it inputs a 0 in the array. Below is the code I have so far but the result is coming out as just [0] array = np.array([]) for x in df["disc"]: for y in array: if x >= 3: y=0 elif x < 3: y=1 else: y=0 Any help would be much

问题 I don't find an answer in the replies to this kind of question already been asked. I don't understand, why console throws this error " TypeError: Cannot read property 'length' of undefined" , when my for-Loop contains this condition for (let i = 0; i <= res.length; i++) { arr.push(res[i].length); } Without equal sign it works. I don't get why. I thought setting i=1 would work. But it does not. Could anyone explain please, why I get the error when given the condition i>**=**res.length; (with

问题 The following program is just for fun, I am trying to get into bash scripting. I am not going to use the script for doing backups. I am trying to create a for loop to check if user input (directories that will be backed up) in an array are valid. If input is valid, it should be used. If not, it should be overwritten with a default value /home/$USER . echo "Please enter absolute path of directory for backup. Default is "/home/$USER echo "You can choose multiple directories. Press CTRL-D to

问题 Why does SwiftUI like to throw errors like Closure containing control flow statement cannot be used with function builder 'ViewBuilder' When I simply try something like VStack { for i in 0...10 { Text("Hello, world!") } } It will not compile. Why does swift care? How does the SwiftUI framework even detect if there are control flow statements, and throw errors? 回答1: How does the SwiftUI framework even detect if there are control flow statements, and throw errors? It doesn't. The Swift language

问题 Why does SwiftUI like to throw errors like Closure containing control flow statement cannot be used with function builder 'ViewBuilder' When I simply try something like VStack { for i in 0...10 { Text("Hello, world!") } } It will not compile. Why does swift care? How does the SwiftUI framework even detect if there are control flow statements, and throw errors? 回答1: How does the SwiftUI framework even detect if there are control flow statements, and throw errors? It doesn't. The Swift language