Here are some examples of printing with no control over the format. The old way will accept many types of numbers, the new way requires the entry to have the type of a Python float. It offers several advantages over the float datatype:. The format string includes %d spaces where the integers should go or %f places for the floating point numbers. How do I parse a string to a float or int? Let's create a test DataFrame with random numbers in a float format in order to illustrate scientific notation. L is not "declared" as a string. Uses and assumes IEEE unbiased rounding. No string-number conversions exist there. One possibility to get what you want is to use Python string formatting. 2139. 12345000000000000000000.0 or 0.000000000000012345, not in scientific notation, yet I'd want to keep the 15.7 decimal digits of precision and no more. The % operator takes a format string and an argument or tuple of arguments. That indicates that the .csv file has it in scientific notation. Provides control over rounding, trimming and padding. We can specify the total number of characters to use (the number is right justified in this space). 2874. This is a notation standard used by many computer programs including Python Pandas. This can be done the old way with % and the new way with {}and .format. Converting numbers to strings without scientific notation in C# C# will automatically convert numbers which are of type float, double or decimal and have a lot of precision (lots of numbers after the decimal point) to scientific notation. 12345000000000000000000.0 or 0.000000000000012345, not in scientific notation, yet I'd want to the result to have the up to ~15.7 significant figures of a IEEE 754 double, and no more. 3935. Convert scientific notation (letters in decimal values) when reading excel with pandas.read_excel. STR() function would do, but my input may contain string, int, number with decimals, number without decimals. This can leave up to 3 digits to the left of the decimal place and may require the addition of either one or two trailing zeros. Converting numbers to strings without scientific notation in C# C# will automatically convert numbers which are of type float, double or decimal and have a lot of precision (lots of numbers after the decimal point) to scientific notation. Je veux imprimer des nombres à virgule flottante pour qu'ils soient toujours écrits sous forme décimale (par exemple, 12345000000000000000000.0 ou 0.000000000000012345, pas en notation scientifique, mais je veux garder les 15,7 chiffres décimaux de précision et pas plus. Here is an illustration of both, with 72 digits after the decimal … Convertit float en chaîne sans notation scientifique et fausse précision (4) . What is the difference between String and string in C#? Strings in Python are really just arrays with a Unicode for each character as an element in the array, allowing you to use indices to access a single character from the string. Python Reference (The Right Way) Docs » e | E (scientific notation) Edit on GitHub; e | E (scientific notation) ¶ Description¶ Returns a float multiplied by the specified power of 10. As an aside, despite the format % values syntax still being used even within the Python 3 standard library, I believe it's technically deprecated in Python 3, or at least not the recommended formatting method, and the current recommended syntax, starting with Python 2.6, would be '{0:.2E}'.format(Decimal('40800000000.00000000000000')) (or '{:.2E}' in Python 2.7+).