Python3基础条件控制 if ---elif---else Python3 条件控制 Python条件语句是通过一条或多条语句的执行结果(True或者False)来决定执行的代码块。 可以通过下图来简单了解条件语句的执行过程: if 语句 Python中if语句的一般形式如下所示: if condition_1: statement_block_1elif condition_2: statement_block_2else...
/bin/env python # coding=gb2312 # -*- coding: gb2312 -*- from __future__ import division ### if-else...: ", a else: print "max: ", b ### if-elif-else ###...
技术标签:python列表生成式if-else 列表推导式总共以下有两种形式: 1、[x for x in data if condition] 此处if主要起条件判断作用,data数据中只有满足if条件的才会被留下,最终生成一个数据列表。 2、[exp1 if condition else exp2 for x in data] 此处if…else主要起赋值作用。当data中的数据满足if条件时,...
## LeetCode 520 class Solution: def detectCapitalUse(self, word: str) -> bool: ## The first letter is lower case, then if the 2nd letter is upper: False if len(word) >= 2 and word[0].islower() and word[1].isupper(): return False 3.3 考虑剩下的其他所有情况: 无论第一个字母...
Python中的If Elif Else条件是一种控制流语句,用于根据条件的真假执行不同的代码块。它的语法如下: 代码语言:txt 复制 if 条件1: # 如果条件1为真,执行这里的代码 elif 条件2: # 如果条件1为假,条件2为真,执行这里的代码 else: # 如果条件1和条件2都为假,执行这里的代码 ...
if test expression: Body of if else: Body of else As depicted by the flowchart above, the Python program first evaluates the test expression. It is basically the condition in the if statement. If the condition is met or if the condition is true, then only the statement(s) in the body...
self.fall=False # nobreak,then fall=False def__iter__(self):yieldself.match # match method to create raise StopIteration # exception to check loop defmatch(self,*args):ifself.fall or not args:returnTrue elif self.valueinargs:# successful ...
The Python if..else statement executes a block of code, if a specified condition holds true. If the condition is false, another route can be taken.
else : statement_7 statement_8 In the above syntax expression1 is checked first, if it evaluates to true then the program control goes to next if - else part otherwise it goes to the last else statement and executes statement_7, statement_8 etc.. Within the if - else if expression2 ev...
If the conditional is false, the block is not executed. Sometimes the conditional has an if-then-else format. The else branch contains a code block that only runs when the conditional is false. A conditional statement can be used whenever different actions should be taken based on different ...