控制

介绍

控件包括用于计时、程序流程、条件逻辑和项目终止的方法。这些控件允许您暂停执行、创建循环、定义逻辑路径以及结束程序。以下是可用控件的列表，包括方法和核心 Python 关键字：

• wait – 暂停执行给定的毫秒数或秒数。

• for – 对序列中的每个项目重复代码。

• if – 如果条件为真，则执行代码。

• if/else – 根据条件运行不同的代码。

• if/elif/else – 按顺序检查多个条件。

• while – 当条件为真时重复代码。

• break – 立即退出循环。

• stop_program – 结束正在运行的程序。

• pass – 不需要采取任何行动时使用的占位符。

等待

wait pauses for a specific amount of time before moving to the next method.

Usage:
wait(time, units)

参数	描述
time	等待的时间量，以正整数表示。
units	毫秒 MSEC （默认）或 SECONDS。

# Example coming soon

为了

for iterates over a sequence (such as a list, tuple, dictionary, set, or string) or any iterable object. It executes the block of code once for each item in the sequence.

使用量：

for value in expression_list:
    pass

参数	描述
value	存储迭代中的当前元素的临时变量。
expression_list	循环遍历的元素集合（例如，列表、字符串、范围）。

# Example coming soon

如果

if executes the indented block of code if the condition evaluates as True.

用法：

if condition:
    pass

参数	描述
condition	An expression or variable that is evaluated when the statement runs. If it evaluates as True, the code inside the if block executes; if it evaluates as False, the block is skipped.

# Example coming soon

如果/否则

if and else determine which indented block of code runs based on whether the condition evaluates as True or False.

用法：

if condition:
    pass
else:
    pass

参数	描述
condition	An expression or variable that is evaluated when the statement runs. If it evaluates as True, the code inside the if block executes; if it evaluates as False, the code inside the else block executes instead.

# Example coming soon

如果/否则

The if/elif/else structure selects which indented block of code runs based on conditions:

• if runs its block if the condition evaluates as True.

• elif checks additional conditions only if all previous conditions evaluated as False. Multiple elif statements can be used.

• else 仅当先前的条件均不为 True时才运行其块。

用法：

if condition:
    pass
elif condition:
    pass
else:
    pass

参数	描述
condition	语句运行时要求值的表达式或变量。第一个求值为 True 的条件决定执行哪个块；如果没有一个为 True，则运行 else 块。

# Example coming soon

尽管

while repeatedly runs methods as long as the condition is True. It can also be used like a “Wait until” by adding not to the condition, as shown in the example below.

用法：

while condition:
    pass

参数	描述
condition	An expression or variable that is evaluated before each iteration. If it evaluates as True, the loop continues; if it evaluates as False, the loop stops.

# Example coming soon

休息

break exits a loop immediately.

# Example coming soon

停止程序

program_stop ends a running project.

Usage:
brain.program_stop()

参数	描述
	该方法没有参数。

# Example coming soon

经过

pass is a placeholder for future code and can be used to avoid errors in empty loops, conditionals, and functions.

if condition:
    pass

def function():
    pass