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[英]How can I append a CSV file to an existing zip archive in Python?
[英]How to compress csv file into zip archive directly?
我正在使用以下代碼動態生成多個 csv 文件:
import csv
fieldnames = ['foo1', 'foo2', 'foo3', 'foo4']
with open(csvfilepath, 'wb') as csvfile:
csvwrite = csv.DictWriter(csvfile, delimiter=',', fieldnames=fieldnames)
csvwrite.writeheader()
for row in data:
csvwrite.writerow(row)
為了節省空間,我想壓縮它們。
使用gzip
模塊非常簡單:
with gzip.open("foo.gz", "w") as csvfile :
csvwrite = csv.DictWriter(csvfile, delimiter=',', fieldnames=fieldnames)
csvwrite.writeheader()
for row in data:
csvwrite.writerow(row)
但我想要“zip”格式的文件。
我嘗試了zipfile
模塊,但無法直接將文件寫入 zip 存檔。
相反,我必須將 csv 文件寫入磁盤,使用以下代碼將它們壓縮為 zip 文件,然后刪除 csv 文件。
with ZipFile(zipfilepath, 'w') as zipfile:
zipfile.write(csvfilepath, csvfilename, ZIP_DEFLATED)
如何將 csv 文件直接寫入類似於 gzip 的壓縮 zip?
使用cStringIO.StringIO
對象模仿一個文件:
with ZipFile(your_zip_file, 'w', ZIP_DEFLATED) as zip_file:
string_buffer = StringIO()
writer = csv.writer(string_buffer)
# Write data using the writer object.
zip_file.writestr(filename + '.csv', string_buffer.getvalue())
謝謝 kroolik 它幾乎沒有修改就完成了。
with ZipFile(your_zip_file, 'w', ZIP_DEFLATED) as zip_file:
string_buffer = StringIO()
csvwriter = csv.DictWriter(string_buffer, delimiter=',', fieldnames=fieldnames)
csvwrite.writeheader()
for row in cdrdata:
csvwrite.writerow(row)
zip_file.writestr(filename + '.csv', string_buffer.getvalue())
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