swap exact tokens for tokens

[0xgigi]

hi, this is my code:

from uniswap.uniswap import UniswapV2Client
import time

my_provider = "https://rinkeby.infura.io/v3/xxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
client = UniswapV2Client("xxxxxxxxxxxxxxxxxxx", "xxxxxxxxxxxxxxxxxxxxxx", provider=my_provider)

amount_in = 1 * 10 * * 15
min_amount_out = 1 * 10 * * 13
path = [
"0xc778417E063141139Fce010982780140Aa0cD5Ab",
"0xc032f269808abf88cd58b6aca9b4515d80b4170c"
]
to_address = "xxxxxxxxxxxxxxxxxxxxxxxxxxx"
deadline = deadline = int(time.time()) + 1000

tx = client.swap_exact_tokens_for_tokens(amount_in, min_amount_out, path, to_address, deadline)

and I get this error:

<web3._utils.datatypes.Contract object at 0x0000023E9A2B05E0> 0xc778417E063141139Fce010982780140Aa0cD5Ab
Approving 1000000000000000 of 0xc778417E063141139Fce010982780140Aa0cD5Ab
Traceback (most recent call last):
File ".\web3-test-uniswap-rinkeby.py", line 23, in
tx = client.swap_exact_tokens_for_tokens(amount_in, min_amount_out, path, to_address, deadline)
File "C:\Users\n\AppData\Local\Programs\Python\Python38\lib\site-packages\uniswap\uniswap.py", line 411, in swap_exact_tokens_for_tokens
self.approve(path[0], amount)
File "C:\Users\n\AppData\Local\Programs\Python\Python38\lib\site-packages\uniswap\uniswap.py", line 179, in approve
tx = self._send_transaction(func, params)
File "C:\Users\n\AppData\Local\Programs\Python\Python38\lib\site-packages\uniswap\uniswap.py", line 131, in _send_transaction
signed_tx = self.conn.eth.account.sign_transaction(tx, private_key=self.private_key)
File "C:\Users\n\AppData\Local\Programs\Python\Python38\lib\site-packages\eth_utils\decorators.py", line 18, in _wrapper
return self.method(obj, *args, **kwargs)
File "C:\Users\n\AppData\Local\Programs\Python\Python38\lib\site-packages\eth_account\account.py", line 667, in sign_transaction
) = sign_transaction_dict(account._key_obj, sanitized_transaction)
File "C:\Users\n\AppData\Local\Programs\Python\Python38\lib\site-packages\eth_account_utils\signing.py", line 28, in sign_transaction_dict
unsigned_transaction = serializable_unsigned_transaction_from_dict(transaction_dict)
File "C:\Users\n\AppData\Local\Programs\Python\Python38\lib\site-packages\eth_account_utils\transactions.py", line 43, in serializable_unsigned_transaction_from_dict
assert_valid_fields(transaction_dict)
File "C:\Users\n\AppData\Local\Programs\Python\Python38\lib\site-packages\eth_account_utils\transactions.py", line 147, in assert_valid_fields
raise TypeError("Transaction had invalid fields: %r" % invalid)
TypeError: Transaction had invalid fields: {'gasPrice': (15000000000,)}

I have 18 eth on my account and I dont get it why gasprice might be an issue.
is it because I use a testnet?

thank you

[curiousbero]

I know pretty late reply but you have a comma at the end of "15000000000,".

[joyjune970]

我知道回复很晚，但是您在“15000000000”的末尾有一个逗号。

Can you post some usage documents, in this case, we can all operate better, and we all think it can be called directly.