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How can I filter lines on load in Pandas read_csv function?
How can I filter which lines of a CSV to be loaded into memory using pandas? This seems like an option that one should find in read_csv . Am I missing something?
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Pandas read_csv low_memory and dtype options
...ypes (should always be done)
adding
dtype={'user_id': int}
to the pd.read_csv() call will make pandas know when it starts reading the file, that this is only integers.
Also worth noting is that if the last line in the file would have "foobar" written in the user_id column, the loading would crash i...
How to load a tsv file into a Pandas DataFrame?
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Note: As of 17.0 from_csv is discouraged: use pd.read_csv instead
The documentation lists a .from_csv function that appears to do what you want:
DataFrame.from_csv('c:/~/trainSetRel3.txt', sep='\t')
If you have a header, you can pass header=0....
Import CSV file to strongly typed data structure in .Net [closed]
What's the best way to import a CSV file into a strongly-typed data structure?
11 Answers
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Which encoding opens CSV files correctly with Excel on both Mac and Windows?
We have a web app that exports CSV files containing foreign characters with UTF-8, no BOM. Both Windows and Mac users get garbage characters in Excel. I tried converting to UTF-8 with BOM; Excel/Win is fine with it, Excel/Mac shows gibberish. I'm using Excel 2003/Win, Excel 2011/Mac.
Here's all the ...
Get pandas.read_csv to read empty values as empty string instead of nan
I'm using the pandas library to read in some CSV data. In my data, certain columns contain strings. The string "nan" is a possible value, as is an empty string. I managed to get pandas to read "nan" as a string, but I can't figure out how to get it not to read an empty value as NaN. Here's sam...
How to output MySQL query results in CSV format?
...o run a MySQL query from the Linux command line and output the results in CSV format?
38 Answers
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Reading CSV files using C#
I'm writing a simple import application and need to read a CSV file, show result in a DataGrid and show corrupted lines of the CSV file in another grid. For example, show the lines that are shorter than 5 values in another grid. I'm trying to do that like this:
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Skip rows during csv import pandas
I'm trying to import a .csv file using pandas.read_csv() , however I don't want to import the 2nd row of the data file (the row with index = 1 for 0-indexing).
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Makefile经典教程（入门必备） - C/C++ - 清泛网 - 专注IT技能提升
...量的声明的正确。对于后者，通常是你需要告诉编译器头文件的所在位置（头文件中应该只是声明，而定义应该放在C/C++文件中），只要所有的语法正确，编译器就可以编译出中间目标文件。一般来说，每个源文件都应该对应于...