FSTRING -ZULTER -Format Python
num = 10.4999
print(f"The formatted number is {num:.2f}")
# output: The formatted number is 10.49
FaceToThePalm
num = 10.4999
print(f"The formatted number is {num:.2f}")
# output: The formatted number is 10.49from random import randint
for i in range(5):
print(f'My money is {randint(0, 150):>3}$')Syntax: "{" [field_name] ["!" conversion] [":" format_spec] "}"
# let's understand what each field means...
field_name ::= arg_name ("." attribute_name | "[" element_index "]")*
arg_name ::= [identifier | digit+]
attribute_name ::= identifier
element_index ::= digit+ | index_string
index_string ::= <any source character except "]"> +
conversion ::= "r" | "s" | "a"
format_spec ::= [[fill]align][sign][#][0][width][grouping_option][.precision][type]
# Looking at the underlying fields under format_spec...
fill ::= <any character>
align ::= "<" | ">" | "=" | "^"
sign ::= "+" | "-" | " "
width ::= digit+
grouping_option ::= "_" | ","
precision ::= digit+
type ::= "b" | "c" | "d" | "e" | "E" | "f" | "F" | "g" | "G" | "n" | "o" | "s" | "x" | "X" | "%"grade = 29/45
print(f'My grade rounded to 3 decimals is {grade:.3%}.')# Let's break it down...
# [field_name] => number1
# ["!" conversion] => Not used
# [format_spec] => [.precision][type]
# => .[2][f] => .2f # where f means Fixed-point notationf'{value:{width}.{precision}}'