print(f"整型为{data:4},浮点型为{data2:4},字符串为{data3:4}") #f/F{variable_name:宽度} print(f"整型为{data:<4}, 浮点型为{data2:<4}, 字符串为{data3:<4}") #< 表示左对齐 print(f"整型为{data:>4}, 浮点型为{data2:>4}, 字符串为{data3:>4}") #表示右对齐 print(f"整...
/usr/bin/python# -*- coding: UTF-8 -*-str='Hello World!'printstr# 输出完整字符串printstr[0]# 输出字符串中的第一个字符printstr[2:5]# 输出字符串中第三个至第六个之间的字符串printstr[2:]# 输出从第三个字符开始的字符串printstr*2# 输出字符串两次printstr+"TEST"# 输出连接的字符串 以...
print(n+2)print(n+3) 1920 它同样适用于浮点数和字符串。 print('The value of pi is approximately')print(math.pi) The value of piisapproximately3.141592653589793 你还可以使用由逗号分隔的表达式序列。 print('The value of pi is approximately', math.pi) The value of piisapproximately3.1415926535897...
Python中的$variable name获取os.getenv 您可以使用$作为变量名,请尝试以下代码: import os key = 'HOME'value = os.getenv(key)print("Value of 'HOME' environment variable :", value) key = '$'value = os.getenv(key)print("Value of '$' environment variable :", value) (Python)Localizing var...
print the variable along with the message. The print statement evaluates each expression which is separated with a comma. If an expression is not a string, it will be converted into a string and then displayed. And theprintstatement is always followed by a newline unless it ends with a ...
>>> print(x) 1 >>> print(y) 2 >>> print(z) abcd You can reuse variable names by simply assigning a new value to them : >>> x = 100 >>> print(x) 100 >>> x = "Python" >>> print(x) Python >>> Other ways to define value ...
print("{0} {1} {2}".format(variable1, variable2, variable2) Example # Python program to print multiple variables# using format() method with numbersname="Mike"age=21country="USA"print("{0} {1} {2}".format(name, age, country))print("Name: {0}, Age: {1}, Country: {2}".for...
数据整理或者其他任务。Python在字符串中遇到%时，期待后面跟着另一个字符，这样它才能知道怎么把variable...
print(x) <---Print function Variable Operator Constant Function Constants:we call it contants because they dont change. Numeric constantsare as you expect String constantsuse single quotes(') or double quotes(") Variables: A varible is
importnumpyasnpdeftest(a):a[0]=np.nanm=[1,2,3]test(m)print(m) output: [nan, 2, 3] Note python has this really weird error if you define local variable in a function same name as the global variable, program will promptUnboundLocalError. ...