>>> ip_address = "127.0.0.1"# pylint complains if we use the methods below>>> "http://%s:8000/" % ip_address'http://127.0.0.1:8000/'>>> "http://{}:8000/".format(ip_address)'http://127.0.0.1:8000/'# Replace it
不过 f-string 并不能完全替代 str.format。本文也将列举出这两者并不通用的情况。 2、基本的字符串格式化 如上文所述,使用f-string格式化字符串十分简单。唯一的要求就是给它一个有效的表达式。f-string 也可以用大写F开头或者与 r 原始字符串结合使用。但是你不能将其与 b”” 或者 ”u” 混用。 book =...
# the above formatting can also be done by using f-Strings # Although, this features work only with python 3.6 or above. print(f"I love {'Geeks'} for \"{'Geeks'}!\"") # using format() method and referring # a position of the object print(f"{'Geeks'} and {'Portal'}") 1. ...
F-strings also support format specifiers that control numerical precision, alignment, and padding. Format specifiers are added after a colon (:) inside the curly brackets. For instance,f'{price:.3f}'ensures that the floating-point number stored inpriceis rounded to three decimal places: price =...
F-strings are string literals prefixed with 'f' or 'F' that contain expressions inside curly braces {}. These expressions are evaluated at runtime and then formatted using the __format__ protocol. Unlike traditional string formatting methods, f-strings provide a more straightforward and readable...
The f-strings have the f prefixanduse {} brackets to evaluate values. Format specifiersfortypes, padding,oraligning are specified after the colon character;forinstance: f'{price:.3}', where priceisa variable name. Python string formatting ...
Example 3: Number formatting with padding for int and floats # integer numbers with minimum widthprint("{:5d}".format(12))# width doesn't work for numbers longer than paddingprint("{:2d}".format(1234))# padding for float numbersprint("{:8.3f}".format(12.2346))# integer numbers with ...
print("Binary: {0:b} => {0:#b}".format(3))print("Large Number: {0:} => {0:,}".format(1.25e6))print("Padding: {0:16} => {0:016}".format(3))# Binary: 11 => 0b11# Large Number: 1250000.0 => 1,250,000.0# Padding: 3 => 0000000000000003 ...
The 0 flag causes padding with "0" characters instead: Python >>> "%05d" % 123 '00123' >>> "%08.2f" % 1.2 '00001.20' The 0 flag can be used with all the numeric conversion types: d, i, u, x, X, o, f, F, e, E, g, and G....
Combining numeric format specifiers Multiple format specifiers can often be combined. For example if you wanted a number represented as hexadecimal with padding to make it 2-digits long, you could combine02dwithxto make02x: >>>bits=13>>>print(f"{bits:02x}")0d ...