The legislation passed with 230 votes in the 300-seat chamber.
Their reopening followed Prime Minister Alexis Tsipras' reluctant acceptance of a tough package of bailout demands from European partners
The country secured a euro 7.16 billion bridge financing from the European Financial Stability Mechanism
Greece awoke with a political hangover on Thursday after parliament approved a stringent bailout programme, thanks to the votes of the pro-European opposition, amid the worst protest violence this year.
Greece will extend a bank holiday that has been in effect since June 29 for two more days.
Greeks greeted news of a deal with creditors on Monday with a measure of relief mixed with much anger.
The crisis remains acute with the country's banks already closed.
The result of the opinion polls would allow the government to move ahead quickly to reach a deal with creditors
Greeks are split on whether to accept an offer by creditors that Prime Minister Alexis Tsipras calls a "humiliation"
The proposals appeared so far apart that success seemed higly unlikely
EU authorities made a last-minute offer to salvage a bailout deal that could keep Greece in the euro as the clock ticked down on Tuesday, with Germany warning that time had run out to extend vital credit lines to Athens.
Closing banks and restricting the flow of capital can build pressure for a solution as finances get squeezed.
The impending default on the IMF loans leaves Greece sliding towards an exit from the euro.
The IMF dashed any hope that Athens could avert default.