# populus: How to have multiple transactions in a single block?

My goal is to write a test case to simulate my contract inside `populus`. I observe that each `transaction()`(even it is a empty function call) will increment block number as one no matter what.

[Q] As we know in a single block there could be multiple transactions. Is it possible to have multiple transactions in a single block, inside the test case of populus?

test.py:

``````blkArrayIndex =  0;
gasUsed       = [];
blockNumber   = [];

set_txn_hash     = my_contract.transact().dummy(); #this is a dummy transaction.

blkArrayIndex = blkArrayIndex + 1;

set_txn_hash     = my_contract.transact().dummy(); #added line.#
set_txn_hash     = my_contract.transact().dummy(); #added line.#
set_txn_hash     = my_contract.transact().dummy(); #added line.#
set_txn_hash     = my_contract.transact().dummy(); #this is a dummy transaction.

blkArrayIndex = blkArrayIndex + 1;

for j in range(0, blkArrayIndex):
print '%s:%d |%s: %d' % ("gasUsed", gasUsed[j], "blockNumber", blockNumber[j])
``````

Output (without added lines):

``````gasUsed:222648 |blockNumber: 4
gasUsed:290051 |blockNumber: 5
``````

Output (when new lines are added): block number changed from 5 to 8.

``````gasUsed:222648|blockNumber: 4
gasUsed:350051|blockNumber: 8 <= after the added lines I want block number as 5 instead of 8.
``````