a1=1 a2=1/(1+a1) an=1/(1+a(n-1)),求a25(结果保留10位小数)

使用C语言实现递归公式a1=1, a2=1/(1+a1), an=1/(1+a(n-1)),计算a25的结果并保留10位小数。" 107275434,8783232,Unity3D游戏开发教程:构建3D仿真,第三部分,"['游戏开发', 'Unity', '3D仿真', 'C#编程', '游戏设计']

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >

#include<stdio.h>
void main()
{
   
   
	int n;
	double a;
	for(n=1;n<=25;n++)
	{
   
   </
(base) C:\Users\lenovo>python -m pip install -i https://mirrors.aliyun.com/pypi/simple/ pyradiomics Looking in indexes: https://mirrors.aliyun.com/pypi/simple/ Collecting pyradiomics Using cached https://mirrors.aliyun.com/pypi/packages/03/c1/20fc2c50ab1e3304da36d866042a1905a2b05a1431ece35448ab6b4578f2/pyradiomics-3.1.0.tar.gz (34.5 MB) Installing build dependencies ... done Getting requirements to build wheel ... done Preparing metadata (pyproject.toml) ... done Discarding https://mirrors.aliyun.com/pypi/packages/03/c1/20fc2c50ab1e3304da36d866042a1905a2b05a1431ece35448ab6b4578f2/pyradiomics-3.1.0.tar.gz#sha256=24722c962a6bbd09bc39c1c67dbffe92435f9692a421fabaae8a6b4511eb48e4 (from https://mirrors.aliyun.com/pypi/simple/pyradiomics/): Requested pyradiomics from https://mirrors.aliyun.com/pypi/packages/03/c1/20fc2c50ab1e3304da36d866042a1905a2b05a1431ece35448ab6b4578f2/pyradiomics-3.1.0.tar.gz#sha256=24722c962a6bbd09bc39c1c67dbffe92435f9692a421fabaae8a6b4511eb48e4 has inconsistent version: expected '3.1.0', but metadata has '3.0.1a1' Using cached https://mirrors.aliyun.com/pypi/packages/1b/35/c7f7fb7affd302fd8107dcee6b6e7aaf3708b75ad69d5f9a3dfcadb73eaa/pyradiomics-3.0.1.tar.gz (34.5 MB) Preparing metadata (setup.py) ... error error: subprocess-exited-with-error × python setup.py egg_info did not run successfully. │ exit code: 1 ╰─> [30 lines of output] C:\Users\lenovo\AppData\Local\Temp\pip-install-ttav_3pw\pyradiomics_b111505a40024acfa2145a73285a25f5\setup.py:9: SetuptoolsDeprecationWarning: The test command is disabled and references to it are deprecated. !! ******************************************************************************** Please remove any references to `setuptools.command.test` in all supported versions of the affected package. This deprecation is overdue, please update your project and remove deprecated calls to avoid build errors in the future. ******************************************************************************** !! from setuptools.command.test import test as TestCommand C:\Users\lenovo\AppData\Local\Temp\pip-install-ttav_3pw\pyradiomics_b111505a40024acfa2145a73285a25f5\versioneer.py:418: SyntaxWarning: invalid escape sequence '\s' LONG_VERSION_PY['git'] = ''' Traceback (most recent call last): File "<string>", line 2, in <module> File "<pip-setuptools-caller>", line 34, in <module> File "C:\Users\lenovo\AppData\Local\Temp\pip-install-ttav_3pw\pyradiomics_b111505a40024acfa2145a73285a25f5\setup.py", line 79, in <module> version=versioneer.get_version(), ^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\lenovo\AppData\Local\Temp\pip-install-ttav_3pw\pyradiomics_b111505a40024acfa2145a73285a25f5\versioneer.py", line 1476, in get_version return get_versions()["version"] ^^^^^^^^^^^^^^ File "C:\Users\lenovo\AppData\Local\Temp\pip-install-ttav_3pw\pyradiomics_b111505a40024acfa2145a73285a25f5\versioneer.py", line 1408, in get_versions cfg = get_config_from_root(root) ^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\lenovo\AppData\Local\Temp\pip-install-ttav_3pw\pyradiomics_b111505a40024acfa2145a73285a25f5\versioneer.py", line 342, in get_config_from_root parser = configparser.SafeConfigParser() ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ AttributeError: module 'configparser' has no attribute 'SafeConfigParser'. Did you mean: 'RawConfigParser'? [end of output] note: This error originates from a subprocess, and is likely not a problem with pip. error: metadata-generation-failed × Encountered error while generating package metadata. ╰─> See above for output. note: This is an issue with the package mentioned above, not pip. hint: See above for details.
最新发布
07-11
<think>我们正在解决用户在使用pip安装pyradiomics时出现的metadata-generation-failed错误。 根据引用[1]和引用[2]的信息,这种错误通常与setuptools的版本有关。引用[2]建议在安装其他包之前先安装特定版本的setuptools(57.5.0)。 因此,我们可以尝试以下步骤: 1. 先升级pip(因为有时pip的旧版本可能导致问题) 2. 安装指定版本的setuptools 3. 然后再尝试安装pyradiomics 注意:用户提到使用清华镜像源,所以我们在命令中也可以使用该镜像源以加速安装。 具体步骤: 步骤1:升级pip python -m pip install --upgrade pip -i https://pypi.tuna.tsinghua.edu.cn/simple 步骤2:安装指定版本的setuptools pip install setuptools==57.5.0 -i https://pypi.tuna.tsinghua.edu.cn/simple 步骤3:安装pyradiomics pip install pyradiomics -i https://pypi.tuna.tsinghua.edu.cn/simple 如果上述步骤不能解决问题,可能需要考虑其他因素,如Python版本是否兼容、系统环境等。但根据引用信息,这是常见解决方法。 另外,引用[1]提到错误可能源自子进程,并且不是pip本身的问题,所以重点在于构建环境(setuptools)的配置。 生成相关问题: 1. 如何解决pip安装包时常见的子进程错误? 2. setuptools在Python包安装中的作用是什么? 3. 除了setuptools版本,还有哪些原因可能导致metadata-generation-failed错误?</think>### 解决pip安装pyradiomics时的metadata-generation-failed错误 此错误通常由setuptools版本不兼容或构建环境问题引起。请按以下步骤解决: #### 解决方案步骤: 1. **强制升级setuptools**(关键步骤) 执行以下命令安装兼容版本: ```bash pip install --upgrade setuptools==57.5.0 -i https://pypi.tuna.tsinghua.edu.cn/simple ``` 2. **升级pip工具** ```bash python -m pip install --upgrade pip ``` 3. **安装构建依赖** ```bash pip install wheel cython -i https://pypi.tuna.tsinghua.edu.cn/simple ``` 4. **重试安装pyradiomics** ```bash pip install pyradiomics -i https://pypi.tuna.tsinghua.edu.cn/simple ``` #### 备用方案: 若仍失败,尝试: ```bash # 1. 清除缓存 pip cache purge # 2. 在虚拟环境中安装 python -m venv pyradiomics_env source pyradiomics_env/bin/activate # Linux/Mac pyradiomics_env\Scripts\activate # Windows pip install pyradiomics ``` #### 常见原因: - 旧版setuptools(<60.0)与新包元数据格式不兼容[^1] - 缺少C/C++编译环境(Windows需安装[Visual C++ Build Tools](https://visualstudio.microsoft.com/visual-cpp-build-tools/)- Python版本不匹配(pyradiomics要≥Python 3.7) > 提示:错误信息`note: This error originates from a subprocess, and is likely not a problem with pip`表明问题出在包构建过程而非pip本身[^2]。
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