format - w3toppers.com

pandas xlsxwriter, format table header – not sheet header

I think you need first reset default header style, then you can change it: pd.core.format.header_style = None All together: import pandas as pd data = pd.DataFrame({‘test_data’: [1,2,3,4,5]}) writer = pd.ExcelWriter(‘test.xlsx’, engine=”xlsxwriter”) pd.core.format.header_style = None data.to_excel(writer, sheet_name=”test”, index=False) workbook = writer.book worksheet = writer.sheets[‘test’] font_fmt = workbook.add_format({‘font_name’: ‘Arial’, ‘font_size’: 10}) header_fmt = workbook.add_format({‘font_name’: ‘Arial’, ‘font_size’: 10, … Read more

Why doesn’t C have unsigned floats?

Why C++ doesn’t have support for unsigned floats is because there is no equivalent machine code operations for the CPU to execute. So it would be very inefficient to support it. If C++ did support it, then you would be sometimes using an unsigned float and not realizing that your performance has just been killed. … Read more

How to format DateTime to 24 hours time?

Use upper-case HH for 24h format: String s = curr.ToString(“HH:mm”); See DateTime.ToString Method.

Formatting a double to two decimal places

string.Format will not change the original value, but it will return a formatted string. For example: Console.WriteLine(“Earnings this week: {0:0.00}”, answer); Note: Console.WriteLine allows inline string formatting. The above is equivalent to: Console.WriteLine(“Earnings this week: ” + string.Format(“{0:0.00}”, answer));

warning: format not a string literal and no format arguments

This warning is gcc’s way of telling you that it cannot verify the format string argument to the printf style function (printf, fprintf… etc). This warning is generated when the compiler can’t manually peek into the string and ensure that everything will go as you intend during runtime. Lets look at a couple of examples. … Read more

Automatic image format detection in PHP

This is one of the functions of getimagesize. They probably should have called it “getimageinfo”, but that’s PHP for you.

How to convert a String containing Scientific Notation to correct Javascript number format

Edit: This answer seems to be generating some confusion. The original question was asking how to convert scientific notation in the form of a string to a number (so that it could be used for calculation). However, a significant number of people finding this answer seem to think it’s about converting a number that is … Read more

Java: unparseable date exception

What you’re basically doing here is relying on Date#toString() which already has a fixed pattern. To convert a Java Date object into another human readable String pattern, you need SimpleDateFormat#format(). private String modifyDateLayout(String inputDate) throws ParseException{ Date date = new SimpleDateFormat(“yyyy-MM-dd HH:mm:ss z”).parse(inputDate); return new SimpleDateFormat(“dd.MM.yyyy HH:mm:ss”).format(date); } By the way, the “unparseable date” exception … Read more

Parsing datetime in Python..?

As @TimPietzcker suggested, the dateutil package is the way to go, it handles the first 3 formats correctly and automatically: >>> from dateutil.parser import parse >>> parse(“Fri Sep 25 18:09:49 -0500 2009”) datetime.datetime(2009, 9, 25, 18, 9, 49, tzinfo=tzoffset(None, -18000)) >>> parse(“2008-06-29T00:42:18.000Z”) datetime.datetime(2008, 6, 29, 0, 42, 18, tzinfo=tzutc()) >>> parse(“2011-07-16T21:46:39Z”) datetime.datetime(2011, 7, 16, 21, … Read more

Spring Boot Jackson date and timestamp Format

First of all Date.toString method generates misleading output and we should not rely on it. Simple example: SimpleDateFormat dateToStringFormat = new SimpleDateFormat(“EEE MMM dd HH:mm:ss Z yyyy”, new Locale(“us”)); Date parsed = dateToStringFormat.parse(“Wed Mar 20 09:00:00 KST 2019”); System.out.println(“Default toString: ” + parsed); dateToStringFormat.setTimeZone(TimeZone.getTimeZone(“Asia/Seoul”)); System.out.println(“With ‘Asia/Seoul’ TZ: ” + dateToStringFormat.format(parsed)); dateToStringFormat.setTimeZone(TimeZone.getTimeZone(“Chile/Continental”)); System.out.println(“With ‘Chile/Continental’ TZ: ” … Read more