Note 10 - Other Loans Payable - Other Loans Payable (Details) - Other Loans Payable [Member] - USD ($)	Jan. 31, 2021	Jul. 31, 2020
Other Loans Payable	$ 381,068	$ 307,092
Current portion	218,129
Other Loans Payable, Noncurrent	162,939	307,092
Government Loan Payable [Member]
Other Loans Payable	31,299	307,092
Current portion	31,299
Other Loans Payable, Noncurrent		307,092
Promissory Note [Member]
Other Loans Payable	349,769
Current portion	186,830
Other Loans Payable, Noncurrent	$ 162,939