Convert a rospy.Time to a human-readable string.

To convert a rospy.Time to a human-readable string in Python, you can use the strftime() function from the datetime module. Here's an example code snippet:

import rospy
from datetime import datetime

rospy.init_node('time_converter')

# Get the current time
current_time = rospy.Time.now()

# Convert to a datetime object
dt = datetime.fromtimestamp(current_time.to_sec())

# Format the datetime object as a string
time_str = dt.strftime('%Y-%m-%d %H:%M:%S.%f')

print(time_str)

This will print the current time in the format "YYYY-MM-DD HH:MM:SS.microseconds".

相关问题

Return a pretty-printed XML string for the Element.

To return a pretty-printed XML string for an Element object in Python, you can use the `etree.tostring()` function with the `pretty_print` parameter set to `True`. Here's an example:

from lxml import etree

# Assuming you have an Element object called 'root'
xml_str = etree.tostring(root, pretty_print=True).decode("utf-8")
print(xml_str)

This will print the XML string with proper indentation and line breaks, making it more readable.

[Synth 8-729] Failed to open './.Xil/Vivado-87385-byl-virtual-machine/refSynth/incrSyn/722318963/u/g/1579510739 .rtd.straps.rtd': No such file or directory，[Synth 8-787] cannot access rtd files in './.Xil/Vivado-87385-byl-virtual-machine/refSynth/incrSyn/722318963/u/g/', this is a FATAL ERROR! Please make sure the directory is readable and writable by the program and do not delete files from this directory while the program is running.

这个错误是 Vivado 综合过程中遇到的问题。可能是因为 .rtd 文件丢失或无法访问。请确认该目录在程序运行时是可读写的，并且不要在程序运行时删除该目录中的文件。如果确认该目录存在且可读写，可以尝试重新运行综合过程或者重新打开 Vivado 工程。如果问题仍然存在，可能需要检查 Vivado 工具链的安装是否正确或者联系 Vivado 官方支持。