iteration

问题 Excuse me if this has been asked before. My search did not bring up any other similar question. This is something that surprised me in Java. Apparently, the enhanced for-loop only accepts an array or an instance of java.lang.Iterable . It does not accept a java.util.Iterator as a valid obj reference to iterate over. For example, Eclipse shows an error message for the following code. It says: " Can only iterate over an array or an instance of java.lang.Iterable " Set<String> mySet = new

问题 I have two different dataframes: A, B. The column Event has similar data that I'm using to compare the two dataframes. I want to give Dataframe A a new column, dfA.newContext#. In order to do this, I'll need to use the Event column. I want to iterate through Dataframe A to find a match for Event and assign the dfB.context# to dfA.newContext# I think a loop would be the best way since I have a few conditions that I need to check. This might be asking a bit much but I'm really stuck.. I want to

问题 Basically, I have a huge amount of files and many of them contain polish letters like 'ł, ż, ź, ó, ń' etc. in their filename. What I want to reach is somehow change this polish letter to standard ascii character. (So for example ż => z, ń => n). The files are located on the server with Linux Debian Squeezee. What should I use and how to achieve the final effect? 回答1: You put a PHP tag to your question, so my answer will consider that. There is a question similiar to yours. Convert national

问题 I'm trying to make a tkinter GUI with a certain amount of buttons and entry fields that is specified by the user, so in this code below for example if the user specifies the variable number to be 3 I want there to be 3 entry boxes and , and I want to set it up so that if I type a value into the first field and click the button next to it, I want that button to read the value from the entry field next to it. I also need to assign each entry field to a variable that will be created through the

问题 My original JSON is given below. [ { "id": "1", "name": "AA_1", "total": "100002", "files": [ { "filename": "8665b987ab48511eda9e458046fbc42e.csv", "filename_original": "some.csv", "status": "3", "total": "100002", "time": "2020-08-24 23:25:49" } ], "status": "3", "created": "2020-08-24 23:25:49", "filenames": "8665b987ab48511eda9e458046fbc42e.csv", "is_append": "0", "is_deleted": "0", "comment": null }, { "id": "4", "name": "AA_2", "total": "43806503", "files": [ { "filename":

问题 def rect_extend(x): m, n = 1 while 1 < x: m = m + 1 n = n + 1 return m, n This simple function returns: 'int' object is not iterable error in iPython. I don't know why it does this, while function doesn't work - condition seems to be true . ( while 's condition was simplified on purpose; original code doesn't have it) 回答1: I think you want m = 1 n = 1 or m = n = 1 instead of m, n = 1 . This (sequence unpacking)[http://docs.python.org/3/tutorial/datastructures.html#tuples-and-sequences]: x, y

问题 Problem: Refresh graphical representaion of Series in ChartObject after each iteration of for loop Ex. y=m*Cos(x) y - Values m - parameter I have some data counted from formula with parameter. I want to visualise what influence has the change of parameter on XYgraph. I want to do it in for loop (added Sleep do have some time to see results). Data and formula are in Excel SpreadSheet. Update script of parameter is in VBA module. Update works on values in spreadsheet but doesn't affect graph.

问题 I have a complex JSON file and I am trying to get the below result using JQ. Expected Result: { "Host": "Test.example.com", "Title": "Ensure message of the day is configured properly", "Status": "passed" } { "Host": "Test.example.com", "Title": "Ensure bond0 is present", "Status": "passed" } { "Host": "Test.example.com", "Title": "Ensure the SELinux state is disabled", "Status": "passed" } Below is the JSON file that I get as a result of running an Chef Inspec profile. JSON FILE: { "platform"

问题 I have 4 columns "Country, year, GDP, CO2 emissions" I want to measure the pearson correlation between GDP and CO2emissions for each country. The country column has all the countries in the world and the year has the values "1990, 1991, ...., 2018". 回答1: You should use a groupby grouped with corr() as your aggregation function: country = ['India','India','India','India','India','China','China','China','China','China'] Year = [2018,2017,2016,2015,2014,2018,2017,2016,2015,2014] GDP = [100,98,94

问题 Assume I have a list of binary parameters (in reality it is a list of checkboxes' IsChecked.Value property). I'm trying to get the bool? (ternary) result that: is true if all the elements in the list are true is false if all the elements in the list are false is null in all other cases, thus there are both true and false elements in the list or the list is empty Until now I came up with the solution that requires iterating over the list twice (checking whether all elements are either true or