if判断条件1:执行语句1……el if判断条件2:执行语句2……el if判断条件3:执行语句3……else:执行语句4…… 实例如下: 实例 #!/usr/bin/python# -*- coding: UTF-8 -*-# 例2:elif用法num=5ifnum==3:# 判断num的值print'boss'elifnum==2:print'user'elifnum==1:print'worker'elifnum<0:# 值小...
It is possible to include anifstatement inside anotherifstatement. For example, number =5# outer if statementifnumber >=0:# inner if statementifnumber ==0:print('Number is 0')# inner else statementelse:print('Number is positive')# outer else statementelse:print('Number is negative') Run...
缩短Python if-statement语法是通过使用三元表达式和逻辑运算符来实现的。在传统的if-else语句中,可以使用条件判断来执行不同的代码块。而通过使用三元表达式,可以在一行代码中实现相同的功能,从而减少了代码量并提高了可读性。 三元表达式的语法如下: 代码语言:txt ...
def if return del import try elif in while else is with except lambda yield 7、行和缩进 学习Python与其他语言最大的区别就是Python的代码块不使用大括号{}来控制类函数以及其 他逻辑判断。python最具特色的就是用缩进来写模块。 缩进的空白数量是可变的但是所有代码块语句必须包含相同的缩进空白数量这个必须...
If the condition is met or if the condition is true, then only the statement(s) in the body of the if statement is(are) executed. If the condition is not true, then the statement in the body of the else statement is executed. The body of if and else statements starts with ...
Python Regex match item in string and return item if sub-item exist Python Regex - If Statement equal to 'string' and match entire line Question: I possess a code that outputs the content amidst header lines, however, it exclusively functions with the test data. Therefore, I am attempting ...
However, Python does not have a character data type, a single character is simply a string with a length of 1. Square brackets can be used to access elements of the string. Example Get the character at position 1 (remember that the first character has the position 0): ...
logic="startswith")ifdollar_i_filesisnotNone: processed_files = process_dollar_i(tsk_util, dollar_i_files) write_csv(report_file, ['file_path','file_size','deleted_time','dollar_i_file','dollar_r_file','is_directory'], processed_files)else:print("No $I files found") ...
Python - If Statement Python - Nested If Python - Match-Case Statement Python - Loops Python - for Loops Python - for-else Loops Python - While Loops Python - break Statement Python - continue Statement Python - pass Statement Python - Nested Loops ...
Python是一门动态类型语言,和C、JAVA等语言不同,你无需手动指明变量的数据类型,根据赋值的不同你可以随意更改一个变量的数据类型,举例来说刚才我们把“整数”这个数据类型赋值给了a这个变量,现在我们再次赋值一个内容为test的"字符串"(String)数据类型给变量a,然后用type()函数来确认,这时你会发现a的数据类型已经...