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“Unicode Error ”unicodeescape" codec can't decode bytes… Cannot open text files in Python 3 [duplica
... had this same error in python 3.2.
I have script for email sending and:
csv.reader(open('work_dir\uslugi1.csv', newline='', encoding='utf-8'))
when I remove first char in file uslugi1.csv works fine.
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How to export DataTable to Excel
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Try simple code, to convert DataTable to excel file as csv:
var lines = new List<string>();
string[] columnNames = dataTable.Columns
.Cast<DataColumn>()
.Select(column => column.ColumnName)
.ToArray();
var header = string.Join(",", columnNames.Select...
动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...因此经常需要在线部署 C 编译器工具链和 Linux 内核的头文件。出于这些原因，SystemTap 脚本的启动相比 DTrace 要慢得多，和 JVM 的启动时间倒有几分类似。虽然存在这些缺点[3]，但总的来说，SystemTap 还是一个非常成熟的动态追踪...
Subset of rows containing NA (missing) values in a chosen column of a data frame
We have a data frame from a CSV file. The data frame DF has columns that contain observed values and a column ( VaR2 ) that contains the date at which a measurement has been taken. If the date was not recorded, the CSV file contains the value NA , for missing data.
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Split a string by spaces — preserving quoted substrings — in Python
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Depending on your use case, you may also want to check out the csv module:
import csv
lines = ['this is "a string"', 'and more "stuff"']
for row in csv.reader(lines, delimiter=" "):
print(row)
Output:
['this', 'is', 'a string']
['and', 'more', 'stuff']
...
List of tables, db schema, dump etc using the Python sqlite3 API
...se.db')
table = pd.read_sql_query("SELECT * from table_name", db)
table.to_csv(table_name + '.csv', index_label='index')
Dump all tables:
import sqlite3
import pandas as pd
def to_csv():
db = sqlite3.connect('database.db')
cursor = db.cursor()
cursor.execute("SELECT name FROM sqlite...
How do I convert dates in a Pandas data frame to a 'date' data type?
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I imagine a lot of data comes into Pandas from CSV files, in which case you can simply convert the date during the initial CSV read:
dfcsv = pd.read_csv('xyz.csv', parse_dates=[0]) where the 0 refers to the column the date is in.
You could also add , index_col=0 in there...
Android中Java和JavaScript交互 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...bject] has no method，那就是你没有做混淆例外处理。 在混淆文件加入类似这样的代码。
keepattributes *Annotation*
keepattributes JavascriptInterface
-keep class com.example.javajsinteractiondemo$JsInteration {
*;
}
All WebView methods must be called on the same ...
PostgreSQL query to return results as a comma separated list
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You can generate a CSV from any SQL query using psql:
$ psql
> \o myfile.csv
> \f ','
> \a
> SELECT col1 AS column1, col2 AS column2 ... FROM ...
The resulting myfile.csv will have the SQL resultset column names as CSV column h...
Is Response.End() considered harmful?
...rmation on response.end so for other searches like myself who wish to post CSV/XML/PDF etc in response to an event without rendering the entire ASPX page, this is how I do it. (overriding the render methods is overly complex for such a simple task IMO)
// Add headers for a csv file or whatever
Resp...