[Eric] How to install QScintilla ?

[projetmbc at club-internet.fr]

Hello,
 I've tried to install Eric via the directory "eric5-5.0.0"  and using "sudo python3  /Users/cbal/Downloads/eric5-5.0.0/install.py". I've had the  following message :
   ===========================
 Checking dependencies
 Python Version: 3.1.1
 Found PyQt
 Sorry, please install QScintilla2 and
 it's PyQt4 wrapper.
 Error: cannot import name Qsci
 ===========================
   
 How can I intsall the missing libraries ?
   
 Any clue is welcomed.
   
 Best regards.
 Christophe.
 
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