= 'USD' : amount = amount / self.currencies[from_currency] # limiting the precision to 4 decimal places amount = round(amount * self.currencies[to_currency], 4) return amount 1. 此方法采用以下参数: From_currency:需要转换的货币 to _currency:想要转换成的货币 Amount:需要转换的金额 并返回转...
Python’s format specifiers like {:b}, {:x}, {:X}, and {:o} make it easy to convert decimal numbers into different number systems. This is helpful for tasks like data encoding, debugging, and system-level programming.b Binary format , base 2 c unicode chars d Decimal format, ...
formatted_pi=f"Pi value rounded to two decimal places is{pi:.2f}"print(formatted_pi) 1. 2. 输出结果与上面相同: Pi value rounded to two decimal places is 3.14 1. 4. 什么时候使用哪个? str.format() 的优点与缺点 优点: 兼容性好,适用于所有 Python 版本。 功能强大,适用于复杂的格式化需求。
python "Name: {p.name}, Age: {p.age}".format(p=p) # 输出: 'Name: Alice, Age: 30' 格式化数字 format方法还支持对数字进行格式化,比如控制小数点后的位数、添加千位分隔符等: python pi = 3.141592653589793 "Pi to two decimal places: {:.2f}".format(pi) # 输出: 'Pi to two decimal pl...
Python 中的三种字符串格式化方式:% 格式化字符、str.format() 方法 和 f-string(f 函数) Python 提供了三种常用的字符串格式化方式,每种方式都有其特点、优点和适用场景。 以下是这三种方式的比较和说明: 1. 格式化字符(% 格式化) %格式化:适用于简单格式化,尤其是兼容旧代码时使用。
".format(100,"encrypted"))# To limit the precisionprint("My average of this {0} was {1:.2f}%".format("semester",78.234876))# For no decimal placesprint("My average of this {0} was {1:.0f}%".format("semester",78.234876))# Convert an integer to its binary or# with other ...
()`还支持对字段进行更细致的格式化控制,例如: ```python pi = 3.141592653589793 formatted_string = "Pi to two decimal places: {:.2f}".format(pi) print(formatted_string) # 输出: Pi to two decimal places: 3.14 ``` ### 总结 - **选择f-string**:如果你使用的是Python 3.6或更高版本,并且...
# Define a floating-point valuevalue=123.45678# Format the value to two decimal placesformatted_value="%.2f"%valueprint(formatted_value)# Output: 123.46# Format the value to one decimal placeformatted_value="%.1f"%valueprint(formatted_value)# Output: 123.5# Format the value to no decimal pl...
To format floating-point numbers, use the code “f”. To determine the precision or number of decimal places, use’.’ followed by a number. Specify the width and alignment using <, >, or ^. Code: num = 4.14159 print("Kindly Print a Float Number: {:.2f}".format(num)) ...
# For no decimal places print ("My average of this {0} was {1:.0f}%" .format("semester", 78.234876)) # Convert an integer to its binary or # with other different converted bases. print("The {0} of 100 is {1:b}" .format("binary", 100)) print("The {0} of 100 is...