I'm trying to unzip a csv file and pass it into pandas so I can work on the file. The code I have tried so far is: 5 Ans...

... CString类：处理字符串 CStringList类：支持CString对象的列表 CWinApp类：派生的程序对象的基类 CWnd类：提供所有窗口类的基本函数 API函数 CArchive类：用于二进制保存档案 CArchive::CArchive 建立一个CArchive对象 CArchi...

...red Aug 12 '15 at 17:06 Martin MächlerMartin Mächler 3,8962222 silver badges2424 bronze badges ...

I have been wondering... If I am reading, say, a 400MB csv file into a pandas dataframe (using read_csv or read_table), is there any way to guesstimate how much memory this will need? Just trying to get a better feel of data frames and memory... ...

...y available. As several answers rightly remarked, in the specific case of csv you can also .seek(0) the underlying file object (a rather special case). I'm not sure that's documented and guaranteed, though it does currently work; it would probably be worth considering only for truly huge csv file...

csv文件用excel打开修改保存后,日期少了秒csv格式的日期打开默认是没有秒的，而且再次保存后秒回丢失，通过设置单元格自定义类型可以解决。选中单元格（或选中列）右键，设置单元格...csv格式的日期打开默认是没有秒的，而...

...ringIO (python2) or io.StringIO (python3) and pass that to the pandas.read_csv function. E.g: import sys if sys.version_info[0] < 3: from StringIO import StringIO else: from io import StringIO import pandas as pd TESTDATA = StringIO("""col1;col2;col3 1;4.4;99 2;4.5;200 3;4...

... You can use: data = pd.read_csv('output_list.txt', sep=" ", header=None) data.columns = ["a", "b", "c", "etc."] Add sep=" " in your code, leaving a blank space between the quotes. So pandas can detect spaces between values and sort in columns. Data co...

I am trying to access a model.filefield in Django to parse a CSV file in Python using the csv module. It's working on Windows, but on Mac it gave me this: ...

... My try with readLines. This piece of a code creates csv with selected years. file_in <- file("in.csv","r") file_out <- file("out.csv","a") x <- readLines(file_in, n=1) writeLines(x, file_out) # copy headers B <- 300000 # depends how large is one pack while(length...