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Django ModelForm: What is save(commit=False) used for?
..._type = "audio"
if attachment.filename.lower().endswith(('.csv','.dif','.ods','.xls','.tsv','.dat','.db','.xml','.xlsx','.xlr')):
attachment.file_type = "spreasheet"
if attachment.filename.lower().endswith(('.doc','.pdf','.rtf','.txt')):
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How to create a temporary directory?
...UIT TERM
trap 'rm -rf "$TMPDIR"' EXIT
# Example use of TMPDIR:
for f in *.csv; do
cp "$f" "$TMPDIR"
# remove duplicate lines but keep order
perl -ne 'print if ++$k{$_}==1' "$TMPDIR/$f" > "$f"
done
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Git: How to remove file from historical commit?
...ilter "git rm --cached --ignore-unmatch PathRelativeRepositoryRoot/bigfile.csv" -- --all
After removing the big file, I was able to push my changes to github master.
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Bulk insert with SQLAlchemy ORM
...
Compared to inserting the same data from CSV with \copy with psql (from the same client to the same server), I see a huge difference in performance on the server side resulting in about 10x more inserts/s. Apparently is bulk-loading using \copy (or COPY on the serve...
Serializing a list to JSON
...... stack, which provides a set of very fast serializers for Json, JSV and CSV.
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What is the recommended batch size for SqlBulkCopy?
...so spent some time looking into. I am looking to optimize importing large CSV files (16+ GB, 65+ million records, and growing) into a SQL Server 2005 database using a C# console application (.Net 2.0). As Jeremy has already pointed out, you will need to do some fine-tuning for your particular circ...
FloatingActionButton 扩展：悬浮操作按钮扩展，可自定义颜色、大小、位置...
...的圆角半径。
半径：数字类型，圆角半径值（0为方形，数值越大越圆）
返回类型：无返回值
SetFabIcon 设置图标(图标路径)
设置悬浮按钮的图标（PNG 文件路径）。
图标路径：文本类型，PNG 图标文...
Python strptime() and timezones?
I have a CSV dumpfile from a Blackberry IPD backup, created using IPDDump.
The date/time strings in here look something like this
(where EST is an Australian time-zone):
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苹果第三财季大中华区营收132.3亿美元 同比增长112% - 资讯 - 清泛网 - 专...
...015财年第三季度财报。财报显示，苹果第三财季净销售额为496 05亿美元，较去年同期的374 32亿美元增长32 5%；净利润为106 77亿美元，较去年同期的77 48亿美元增长37 8%。 苹果第三财季业绩的增长受到了iPhone和Mac创纪录销量、服务...
Reading a file line by line in Go
...ver a file, it would be trivial to first file, _ := os.Open("/path/to/file.csv") and then scan over the file handle: scanner := bufio.NewScanner(file)
– Evan Plumlee
Aug 18 '13 at 13:28
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