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问题 I have 27 csv files containing employee timesheet data with about 2000 lines of data in total, and is growing day by day. I am writing an application that compiles the data in each file to a single csv file for analysis in Excel. I do this by reading each file, write its contents to a string list and then write the string list to a new file. Below is the code writing the list to the file: FileStream fs = new FileStream(saveFileDialog1.FileName, FileMode.CreateNew, FileAccess.ReadWrite);

问题 I have a list of dictionaries that I would like to filter based on multiple criteria. A shortened version of the list looks like so: orders = [{"name": "v", "price": 123, "location": "Mars"}, {"name": "x", "price": 223, "location": "Mars"}, {"name": "x", "price": 124, "location": "Mars"}, {"name": "y", "price": 456, "location": "Mars"}, {"name": "z", "price": 123, "location": "Mars"}, {"name": "z", "price": 5623, "location": "Mars"}] I am looking to end up with a list that contains the

问题 I have a list of dictionaries that I would like to filter based on multiple criteria. A shortened version of the list looks like so: orders = [{"name": "v", "price": 123, "location": "Mars"}, {"name": "x", "price": 223, "location": "Mars"}, {"name": "x", "price": 124, "location": "Mars"}, {"name": "y", "price": 456, "location": "Mars"}, {"name": "z", "price": 123, "location": "Mars"}, {"name": "z", "price": 5623, "location": "Mars"}] I am looking to end up with a list that contains the

问题 Code: sortedgroups = sorted(metagroups, key=lambda group: group[-1]) categories = map(operator.itemgetter(-1), sortedgroups) categorycounts = collections.Counter(categories) print('Writing output files') with open('report.txt', 'a+') as f: for category in categories: f.write(category + '\n') So this code works if I comment out: categorycounts = collections.Counter(categories) The for loop seems to break if I try to count the amounts of same strings in the categories list. Does collections

问题 x1 = [5, 5] x2 = [1, 5, 5, 2] x3 = [5, 5, 1, 2, 5, 5] x4 = [5, 5, 1, 5, 5, 2, 5, 5] x5 = [5, -5] x6 = [1, 2, 3, 4] x7 = [5, 5, 5, 5, 5, 5] How do I remove one of the duplicate values that are next to each other on every list? After all one of the duplicate values that are next to each other are removed, they should look like this: x1 = [5] x2 = [1, 5, 2] x3 = [5, 1, 2, 5] x4 = [5, 1, 5, 2, 5] x5 = [5, -5] x6 = [1, 2, 3, 4] x7 = [5] 回答1: When there can be three or more values in a row and only

问题 x1 = [5, 5] x2 = [1, 5, 5, 2] x3 = [5, 5, 1, 2, 5, 5] x4 = [5, 5, 1, 5, 5, 2, 5, 5] x5 = [5, -5] x6 = [1, 2, 3, 4] x7 = [5, 5, 5, 5, 5, 5] How do I remove one of the duplicate values that are next to each other on every list? After all one of the duplicate values that are next to each other are removed, they should look like this: x1 = [5] x2 = [1, 5, 2] x3 = [5, 1, 2, 5] x4 = [5, 1, 5, 2, 5] x5 = [5, -5] x6 = [1, 2, 3, 4] x7 = [5] 回答1: When there can be three or more values in a row and only

问题 I have a List of objects that I'm adding to in nested foreach loops. the operation is synchronous (or maybe I don't understand lambdas as well as I think I do) and single-threaded and the list isn't unreasonably big. I'm at a total loss for what could be causing this exception. public string PromotionSpecificationIdGuid { get; set; } public virtual List<ElementInstance> ElementInstances { get; set; } public void UpdateInstanceGraph(OfferingInstance parentData, OfferingInstance

问题 I have a List of objects that I'm adding to in nested foreach loops. the operation is synchronous (or maybe I don't understand lambdas as well as I think I do) and single-threaded and the list isn't unreasonably big. I'm at a total loss for what could be causing this exception. public string PromotionSpecificationIdGuid { get; set; } public virtual List<ElementInstance> ElementInstances { get; set; } public void UpdateInstanceGraph(OfferingInstance parentData, OfferingInstance

问题 I have a List of objects that I'm adding to in nested foreach loops. the operation is synchronous (or maybe I don't understand lambdas as well as I think I do) and single-threaded and the list isn't unreasonably big. I'm at a total loss for what could be causing this exception. public string PromotionSpecificationIdGuid { get; set; } public virtual List<ElementInstance> ElementInstances { get; set; } public void UpdateInstanceGraph(OfferingInstance parentData, OfferingInstance

问题 I have a List of objects that I'm adding to in nested foreach loops. the operation is synchronous (or maybe I don't understand lambdas as well as I think I do) and single-threaded and the list isn't unreasonably big. I'm at a total loss for what could be causing this exception. public string PromotionSpecificationIdGuid { get; set; } public virtual List<ElementInstance> ElementInstances { get; set; } public void UpdateInstanceGraph(OfferingInstance parentData, OfferingInstance