- Python : 3.7.3
- OS : Ubuntu 18.04.2 LTS
- IDE : pycharm-community-2019.1.3
- Conda : 4.7.5
- typesetting : Markdown
code
"""
@Author : 行初心
@Date : 2019/7/6
@Blog : www.cnblogs.com/xingchuxin
@Gitee : gitee.com/zhichengjiu
"""
def yield_test():
a = 1
yield a
# next() 遇到yield会停止,保存数据并返回后面的数值
a += 1
yield a
a += 1
yield a
a += 1
yield a
def main():
generator = yield_test()
# yield_test函数中有四个 yield,这里有四个next。
print(next(generator))
print(next(generator))
print(next(generator))
print(next(generator))
# 写第五个
# print(next(generator))
# 会抛出 StopIteration 异常
if __name__ == '__main__':
main()
result
/home/coder/anaconda3/envs/py37/bin/python /home/coder/PycharmProjects/NumericalComputation/demo.py
1
2
3
4
Process finished with exit code 0
source_code
def next(iterator, default=None): # real signature unknown; restored from __doc__
"""
next(iterator[, default])
Return the next item from the iterator. If default is given and the iterator
is exhausted, it is returned instead of raising StopIteration.
"""
pass
resource
- [文档 - English] docs.python.org/3
- [文档 - 中文] docs.python.org/zh-cn/3
- [规范] www.python.org/dev/peps/pep-0008
- [规范] zh-google-styleguide.readthedocs.io/en/latest/google-python-styleguide/python_language_rules
- [源码] www.python.org/downloads/source
- [ PEP ] www.python.org/dev/peps
- [平台] www.cnblogs.com
- [平台] gitee.com
Python具有开源、跨平台、解释型、交互式等特性,值得学习。
Python的设计哲学:优雅,明确,简单。提倡用一种方法,最好是只有一种方法来做一件事。
代码的书写要遵守规范,这样有助于沟通和理解。
每种语言都有独特的思想,初学者需要转变思维、踏实践行、坚持积累。