Questions tagged [python]
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8
questions
1
vote
1answer
38 views
How to compare a mutez value with int in smartpy
When trying to check the transferred value is positive I get an error that TMutez is not TIntOrNat.:
sp.verify(sp.amount > 0, "Amount should be positive")
2
votes
1answer
107 views
Why does smartpy use sp.for/sp.while instead of the default loops provided by python?
So I just started out with smartpy and I am kinda confused about the point of having separate expression for loops. My understanding is that it is may be because it's a part of on-chain computations, ...
1
vote
2answers
98 views
How to total smartpy.TMutez type stored as values in smartpy.bigmap?
I have the following smartpy.bigmap in smart contract storage:
import smartpy as sp
self.data.init(bgmp=sp.bigmap(tkey=sp.TAddress,tvalue=sp.TMutez))
I would like to total all the stored tvalue so ...
2
votes
2answers
117 views
How to connect to sandboxed server with pytezos?
I'm trying to use pytezos with sandboxed tezos server. Pytezos requires the following arguments for connection:
shell, set to http://localhost:18731/
key, which I can't figure out
I tried the ...
4
votes
2answers
179 views
Unable to get consistent tz2 (secp256pk1) signature
I am trying to reproduce the signing algorithm used for tz2 address which uses the secp256pk1 elliptic curve.
My problem is that when I try to verify if the signature is valid with the tezos cli, I ...
3
votes
1answer
372 views
Creating public key hash
Could somebody please point me to a piece of working Python 3.7 code that generates a Tezos public key hash out of seed, password and e-mail address?
Everything I could find so far is always a mix of ...
2
votes
1answer
72 views
Can inject operation but can't preapply operation, returns 400
I can inject an operation but can't preapply an operation, it returns 400.
I checked the body's format and it's OK. Why does this rpc return 400? I can inject the operation.
7
votes
3answers
278 views
How do I base58 encode the chain ID using Python?
When Tezos needs to sign a baking or endorsement operation payload, byte 0 will be a 0x01 for a baking operation or 0x02 for an endorsement operation. Bytes 1-5 in the operation payload contain the ...
