Fetching package metadata …
Solving package specifications: .
Package plan for installation in environment D:\software\Anaconda3:
The following NEW packages will be INSTALLED:
conda-package-handling: 1.7.2-py36h76e460a_0
tqdm: 4.59.0-pyhd3eb1b0_1
The following packages will be UPDATED:
conda: 4.3.30-py36h7e176b0_0 --> 4.9.2-py36haa95532_0
conda-env: 2.6.0-h36134e3_1 --> 2.6.0-1
menuinst: 1.4.10-py36h42196fb_0 --> 1.4.16-py36he774522_1
pycosat: 0.6.2-py36hf17546d_1 --> 0.6.3-py36h2bbff1b_0
requests: 2.18.4-py36h4371aae_1 --> 2.25.1-pyhd3eb1b0_0
vc: 14-h2379b0c_2 --> 14.2-h21ff451_1
vs2015_runtime: 14.0.25123-hd4c4e62_2 --> 14.27.29016-h5e58377_2
ERROR conda.core.link:_execute_actions(337): An error occurred while installing package ‘defaults::tqdm-4.59.0-pyhd3eb1b0_1’.
CondaError: Cannot link a source that does not exist. D:\software\Anaconda3\Scripts\conda.exe
Running conda clean --packages
may resolve your problem.
Attempting to roll back.
CondaError: Cannot link a source that does not exist. D:\software\Anaconda3\Scripts\conda.exe
Running conda clean --packages
may resolve your problem.
解决办法
conda install tqdm -f
在cmd下执行此命令即可