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How to add pandas data to an existing csv file?
...g and closing your file multiple times, or logging data, statistics, etc.
from contextlib import contextmanager
import pandas as pd
@contextmanager
def open_file(path, mode):
file_to=open(path,mode)
yield file_to
file_to.close()
##later
saved_df=pd.DataFrame(data)
with open_file('y...
How do I purge a linux mail box with huge number of emails? [closed]
...
It is not a good praxis data manipulation from outside an application. If there is an option or command that can do the job, it is better to use it. As @timaschew answered, you can use the ‘d’ command inside the mail tool.
– pocjoc
...
How to print to console in pytest?
...1 unfortunately it only prints the test function block, but not the output from print statements :( any more tricks for this?
– U.V.
Sep 29 '18 at 22:15
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Remove last character of a StringBuilder?
...efix = ",";
sb.append(serverId);
}
Alternatively, use the Joiner class from Guava :)
As of Java 8, StringJoiner is part of the standard JRE.
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Render a string in HTML and preserve spaces and linebreaks
...p that has a details page. As part of that I have a description (retrieved from a db) that has spaces and new lines. When it is rendered the new lines and spaces are ignored by the html. I would like to encode those spaces and new lines so that they aren't ignored.
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Check string for palindrome
...Stream provides all indexes til strings half length and then a comparision from the start and from the end is done.
public static void main(String[] args) {
for (String testStr : Arrays.asList("testset", "none", "andna", "haah", "habh", "haaah")) {
System.out.println("testing " + testSt...
Converting List to List
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Using Google Collections from Guava-Project, you could use the transform method in the Lists class
import com.google.common.collect.Lists;
import com.google.common.base.Functions
List<Integer> integers = Arrays.asList(1, 2, 3, 4);
List<St...
Apache Proxy: No protocol handler was valid
...e:
https://serverfault.com/questions/56394/how-do-i-enable-apache-modules-from-the-command-line-in-redhat
The resolution/correct answer is in the comments on the OP:
I think you need mod_ssl and SSLProxyEngine with ProxyPass – Deadooshka May 29 '14 at 11:35
@Deadooshka Yes, this is working. If...
What really happens in a try { return x; } finally { x = null; } statement?
...
No - at the IL level you can't return from inside an exception-handled block. It essentially stores it in a variable and returns afterwards
i.e. similar to:
int tmp;
try {
tmp = ...
} finally {
...
}
return tmp;
for example (using reflector):
static int ...
How to create a DataTable in C# and how to add rows?
... 2:
MyTable.Rows.Add(2, "Ivan");
Add row to DataTable method 3 (Add row from another table by same structure):
MyTable.ImportRow(MyTableByName.Rows[0]);
Add row to DataTable method 4 (Add row from another table):
MyTable.Rows.Add(MyTable2.Rows[0]["Id"], MyTable2.Rows[0]["Name"]);
Add row to...