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Replacing blank values (white space) with NaN in pandas
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If you are exporting the data from the CSV file it can be as simple as this :
df = pd.read_csv(file_csv, na_values=' ')
This will create the data frame as well as replace blank values as Na
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access denied for load data infile in MySQL
...s code works for me:
File tempFile = File.createTempFile(tableName, ".csv");
FileUtils.copyInputStreamToFile(data, tempFile);
JdbcTemplate template = new JdbcTemplate(dataSource);
String path = tempFile.getAbsolutePath().replace('\\', '/');
int rows = template.update(MessageFor...
Read first N lines of a file in python
...he best, but for example if N=1000:
import pandas as pd
yourfile = pd.read_csv('path/to/your/file.csv',nrows=1000)
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How do I get currency exchange rates via an API such as Google Finance? [closed]
...se refer to finance.yahoo.com.
Request: http://finance.yahoo.com/d/quotes.csv?e=.csv&f=sl1d1t1&s=USDINR=X
This CSV was being used by a jQuery plugin called [Curry][1]. Curry has since (2017-08-29) moved to use fixer.io instead due to stability issues.
Might be useful if you need more than j...
Is there a way to ignore header lines in a UNIX sort?
... pass the input in a second time to the sed command, like this: cat sortMe.csv | (sed 1q sortMe.csv; sort -t, -k3 -rn) > sorted.csv
– Harry Cramer
Jun 5 at 3:00
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LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...适用于集成员名和属性名等的命名。
Member_list是集成员列表。如果集成员放在集定义中，那么对它们可采取显式罗列和隐式罗列两种方式。如果集成员不放在集定义中，那么可以在随后的数据部分定义它们。
① 当显式罗列成...
Tools for Generating Mock Data? [closed]
...t can generate larges data set (unlimited size)
it supports various input (CSV, Flat Files, DBUnit) and output format (CSV, Flat Files, DBUnit, XML, Excel, Scripts)
it can be used on the command line or through a maven plugin
it's open source and customizable
I would give it a try.
BTW, a list of...
How to enable MySQL Query Log?
...r seems to have automatically created the general_log table, with the type CSV. This means that I can also tail the corresponding CSV file: sudo tail -f -n 250 /usr/local/mysql/data/mysql/general_log.CSV
– Jay Sheth
Jun 12 '14 at 15:40
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urllib2.HTTPError: HTTP Error 403: Forbidden
...toric stock data using python. The URL I am trying to open responds with a CSV file, but I am unable to open using urllib2. I have tried changing user agent as specified in few questions earlier, I even tried to accept response cookies, with no luck. Can you please help.
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pandas DataFrame: replace nan values with average of columns
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# To read data from csv file
Dataset = pd.read_csv('Data.csv')
X = Dataset.iloc[:, :-1].values
# To calculate mean use imputer class
from sklearn.impute import SimpleImputer
imputer = SimpleImputer(missing_values=np.nan, strategy='mean')
imput...