loops

问题 In R there is a function called assign which assigns a value to a name in the environment. EG: assign("Hello", 2) > Hello [1] 2 In python I can't seem to do the same. I initially tried: import numpy as np import pandas as pd import os for file in os.listdir('C:\\Users\\Olivia\\Documents'): if file.endswith(".csv"): os.path.splitext(file)[0] = pd.read_csv('C:\\Users\\Olivia\\Documents\\' + file) But I can see this is trying to make a string equal to a file which doesn't work. I managed to get

问题 In R there is a function called assign which assigns a value to a name in the environment. EG: assign("Hello", 2) > Hello [1] 2 In python I can't seem to do the same. I initially tried: import numpy as np import pandas as pd import os for file in os.listdir('C:\\Users\\Olivia\\Documents'): if file.endswith(".csv"): os.path.splitext(file)[0] = pd.read_csv('C:\\Users\\Olivia\\Documents\\' + file) But I can see this is trying to make a string equal to a file which doesn't work. I managed to get

问题 I need a bash script that can retrieve MySQL data from a remote data base. Actually I have that done, but what I need it to do now is loop through the records somehow and pass a variable to another bash file. Here's my MySQL call: mysql -X -u $MyUSER -p$MyPASS -h$MyHOST -D$MyDB -e'SELECT `theme_name`, `guid` FROM `themes` WHERE `theme_purchased`="1" AND `theme_compiled`='0';' > themes.xml download_themes.sh It exports the data into an xml file called theme.xml right now, I was just trying to

问题 Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 days ago . Improve this question Can you please explain why there is no output or blank output for the following java code containing do while loop? public class Main { public static void main(String[] args) { int i = 10; do while ( i < 10 ) System.out.print("The value of i is " + i); while ( i

问题 Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 days ago . Improve this question Can you please explain why there is no output or blank output for the following java code containing do while loop? public class Main { public static void main(String[] args) { int i = 10; do while ( i < 10 ) System.out.print("The value of i is " + i); while ( i

问题 I'm trying to manually increment the i variable when a condition is met. for(i in 1:x){ if(condition){ i <- i + 2 } } When debugging, the (i<-i+2) line is definitely being run, but i still only increments by 1, instead of 3. (+2 from the line and an additional +1 from the auto increment) How can I increment while I'm within the loop? 回答1: So essentially you want to skip a few loop iterations based on a condition. It's a design choice that's rightfully frowned upon, but if you must, you need

问题 Hi I am not that good with javascript I have videos and I want when the first video end to play the next video and so. Here is what I tried. <div id="myvideo" style="width: 100%; height: 400px; overflow: hidden;"> <%= video_tag "men-kicking-punching-fighting-during-combat-sport-karate-simulation_b8ltmb7kqx_1080__D.mp4", muted: 'muted',autoplay: :true ,style: 'display: block; height: 100%; width: 100%; object-fit: cover;', class: "active"%> <%= video_tag "young-woman-dancing-on-the-stairs

问题 The following code does the following: Accesses a URL with the FIRST date Closes the "Understanding origins" pop-up window by clicking on SKIP Click on the "Download data" button Opens a new tab with the NEXT date closes previous tab (FIRST date URL) TRIES to click on "Download data" again The problem I have is on number 6. It gives me the "element click intercepted" error, and I assume it's because it thinks a NEW "Understanding origins" pop-up window appeared. However, no pop-up window

问题 The following code does the following: Accesses a URL with the FIRST date Closes the "Understanding origins" pop-up window by clicking on SKIP Click on the "Download data" button Opens a new tab with the NEXT date closes previous tab (FIRST date URL) TRIES to click on "Download data" again The problem I have is on number 6. It gives me the "element click intercepted" error, and I assume it's because it thinks a NEW "Understanding origins" pop-up window appeared. However, no pop-up window

问题 I have two arrays arr1 and arr2 with sizes (90000,1) and (120000,1) . I'd like to find out if any element of axis=0 of arr1 is present on arr2 . Then write their positions on to a list and later remove them. This will ensure that none of the elements on either lists could be found on the other. For now, I'm using for loops: list_conflict=[] for i in range (len(arr1)): for j in range (len(arr2)): if (arr1[i]==arr2[j]): list_conflict.append([i,j]) fault_index_pos = np.unique([x[0] for x in list