Warning
The pyexcel DOES NOT consider Fonts, Styles, Formulas and Charts at all. When you load a stylish excel and update it, you definitely will lose all those styles.
>>> import os >>> import pyexcel >>> data = [ ... [1, 4, 7], ... [2, 5, 8], ... [3, 6, 9] ... ] >>> pyexcel.save_as(array=data, dest_file_name="example.csv") >>> pyexcel.save_as(array=data, dest_file_name="example.tsv")
Read a csv file is simple:
>>> import pyexcel as p
>>> sheet = p.get_sheet(file_name="example.csv")
>>> sheet
example.csv:
+---+---+---+
| 1 | 4 | 7 |
+---+---+---+
| 2 | 5 | 8 |
+---+---+---+
| 3 | 6 | 9 |
+---+---+---+The same applies to a tsv file:
>>> sheet = p.get_sheet(file_name="example.tsv")
>>> sheet
example.tsv:
+---+---+---+
| 1 | 4 | 7 |
+---+---+---+
| 2 | 5 | 8 |
+---+---+---+
| 3 | 6 | 9 |
+---+---+---+Meanwhile, a tab separated file can be read as csv too. You can specify a delimiter parameter.
>>> with open('tab_example.csv', 'w') as f:
... unused = f.write('I\tam\ttab\tseparated\tcsv\n') # for passing doctest
... unused = f.write('You\tneed\tdelimiter\tparameter\n') # unused is added
>>> sheet = p.get_sheet(file_name="tab_example.csv", delimiter='\t')
>>> sheet
tab_example.csv:
+-----+------+-----------+-----------+-----+
| I | am | tab | separated | csv |
+-----+------+-----------+-----------+-----+
| You | need | delimiter | parameter | |
+-----+------+-----------+-----------+-----+>>> os.unlink("example.csv") >>> os.unlink("example.tsv") >>> os.unlink("tab_example.csv")
Suppose you have one data file as the following:
---pyexcel:example.xls---Column 1,Column 2,Column 3 1,4,7 2,5,8 3,6,9
>>> import os >>> import pyexcel >>> data = [ ... ["Column 1", "Column 2", "Column 3"], ... [1, 4, 7], ... [2, 5, 8], ... [3, 6, 9] ... ] >>> pyexcel.save_as(array=data, dest_file_name="example.xls")
And you want to add a new row:
12, 11, 10
Here is the code:
>>> import pyexcel as pe
>>> sheet = pe.get_sheet(file_name="example.xls")
>>> sheet.row += [12, 11, 10]
>>> sheet.save_as("new_example.xls")
>>> pe.get_sheet(file_name="new_example.xls")
pyexcel_sheet1:
+----------+----------+----------+
| Column 1 | Column 2 | Column 3 |
+----------+----------+----------+
| 1 | 4 | 7 |
+----------+----------+----------+
| 2 | 5 | 8 |
+----------+----------+----------+
| 3 | 6 | 9 |
+----------+----------+----------+
| 12 | 11 | 10 |
+----------+----------+----------+Suppose you want to update the last row of the example file as:
['N/A', 'N/A', 'N/A']
Here is the sample code:
.. code-block:: python>>> import pyexcel as pe >>> sheet = pe.get_sheet(file_name="example.xls") >>> sheet.row[3] = ['N/A', 'N/A', 'N/A'] >>> sheet.save_as("new_example1.xls") >>> pe.get_sheet(file_name="new_example1.xls") pyexcel_sheet1: +----------+----------+----------+ | Column 1 | Column 2 | Column 3 | +----------+----------+----------+ | 1 | 4 | 7 | +----------+----------+----------+ | 2 | 5 | 8 | +----------+----------+----------+ | N/A | N/A | N/A | +----------+----------+----------+
And you want to add a column instead:
["Column 4", 10, 11, 12]
Here is the code:
>>> import pyexcel as pe
>>> sheet = pe.get_sheet(file_name="example.xls")
>>> sheet.column += ["Column 4", 10, 11, 12]
>>> sheet.save_as("new_example2.xls")
>>> pe.get_sheet(file_name="new_example2.xls")
pyexcel_sheet1:
+----------+----------+----------+----------+
| Column 1 | Column 2 | Column 3 | Column 4 |
+----------+----------+----------+----------+
| 1 | 4 | 7 | 10 |
+----------+----------+----------+----------+
| 2 | 5 | 8 | 11 |
+----------+----------+----------+----------+
| 3 | 6 | 9 | 12 |
+----------+----------+----------+----------+Again let's update "Column 3" with:
[100, 200, 300]
Here is the sample code:
>>> import pyexcel as pe
>>> sheet = pe.get_sheet(file_name="example.xls")
>>> sheet.column[2] = ["Column 3", 100, 200, 300]
>>> sheet.save_as("new_example3.xls")
>>> pe.get_sheet(file_name="new_example3.xls")
pyexcel_sheet1:
+----------+----------+----------+
| Column 1 | Column 2 | Column 3 |
+----------+----------+----------+
| 1 | 4 | 100 |
+----------+----------+----------+
| 2 | 5 | 200 |
+----------+----------+----------+
| 3 | 6 | 300 |
+----------+----------+----------+Alternatively, you could have done like this:
>>> import pyexcel as pe
>>> sheet = pe.get_sheet(file_name="example.xls", name_columns_by_row=0)
>>> sheet.column["Column 3"] = [100, 200, 300]
>>> sheet.save_as("new_example4.xls")
>>> pe.get_sheet(file_name="new_example4.xls")
pyexcel_sheet1:
+----------+----------+----------+
| Column 1 | Column 2 | Column 3 |
+----------+----------+----------+
| 1 | 4 | 100 |
+----------+----------+----------+
| 2 | 5 | 200 |
+----------+----------+----------+
| 3 | 6 | 300 |
+----------+----------+----------+How about the same alternative solution to previous row based example? Well, you'd better to have the following kind of data:
---pyexcel:row_example.xls---Row 1,1,2,3 Row 2,4,5,6 Row 3,7,8,9
>>> import os >>> import pyexcel as pe >>> data = [ ... ["Row 1", 1, 2, 3], ... ["Row 2", 4, 5, 6], ... ["Row 3", 7, 8, 9], ... ] >>> pe.save_as(array=data, dest_file_name="row_example.xls")
And then you want to update "Row 3" with for example:
[100, 200, 300]These code would do the job:
>>> import pyexcel as pe
>>> sheet = pe.get_sheet(file_name="row_example.xls", name_rows_by_column=0)
>>> sheet.row["Row 3"] = [100, 200, 300]
>>> sheet.save_as("new_example5.xls")
>>> pe.get_sheet(file_name="new_example5.xls")
pyexcel_sheet1:
+-------+-----+-----+-----+
| Row 1 | 1 | 2 | 3 |
+-------+-----+-----+-----+
| Row 2 | 4 | 5 | 6 |
+-------+-----+-----+-----+
| Row 3 | 100 | 200 | 300 |
+-------+-----+-----+-----+>>> os.unlink("new_example.xls") >>> os.unlink("new_example1.xls") >>> os.unlink("new_example2.xls") >>> os.unlink("new_example3.xls") >>> os.unlink("new_example4.xls") >>> os.unlink("new_example5.xls") >>> os.unlink("example.xls")