I've been trying to have this data write to the "scenario_out.txt" file. However, when I run the code I do not any get errors but my text file does come out to empty, so no data was ever put into the file. . I'm reviewing my notes but I don't see where I went wrong.
# Display results of scenario
def file_save_flow(save_to_file, # save to a file object if save_to_file = True
file_object, # name of file object to save to
scen_year,
age,
s_bal,
bal_pv,
inv_gains,
ann_savings,
ss_payment,
major_inc,
major_exp,
tax_rate,
tar_ret_spend,
net_ret_spend,
ret_pre_tax_spend,
taxes,
end_bal
):
""" file_save_flow() test output
>>> out_file = open("scenario_out.txt","w")
>>> file_save_flow(save_to_file = True,
... file_object = out_file,
... scen_year = 0,
... age = 60,
... s_bal = 100000,
... bal_pv = 100000,
... inv_gains = 1000,
... ann_savings = 1000,
... ss_payment = 1000,
... major_inc = 1000,
... major_exp = 1000,
... tax_rate = 0.15,
... tar_ret_spend = 50000,
... net_ret_spend = 40000,
... ret_pre_tax_spend = 60000,
... taxes = 10000,
... end_bal = 120000
... )
>>> out_file.close()
>>> in_file = open("scenario_out.txt","r")
>>> print(in_file.read())
Year :0
Age :60
Start Bal :100,000.00
Start Bal PV :100,000.00
Invest Gains :1,000.00
Ann Savings :1,000.00
SS Payment :1,000.00
Major Inc :1,000.00
Major Exp :1,000.00
Tax Rate :15.00%
Targ Ret Spend :50,000.00
Net Ret Spend :40,000.00
Ret Pre-tax Spend:60,000.00
Taxes :10,000.00
End Bal :120,000.00
<BLANKLINE>
>>> in_file.close()
"""
#=============================My Code================================
if save_to_file == True:
print(' Year :' , scen_year,
'\n Age :',age,
'\n Start Bal :', (format(s_bal, ',.2f')) ,
'\n Start Bal PV :', (format(bal_pv, ',.2f')),
'\n Invest Gains :', (format(inv_gains, ',.2f')),
'\n Ann Savings :', (format(ann_savings,',.2f')),
'\n SS Payment :', (format(ss_payment, ',.2f')),
'\n Major Inc :', (format(major_inc, ',.2f')),
'\n Major Exp :', (format(major_exp, ',.2f')),
'\n Tax Rate :', (format(tax_rate, '.2%')),
'\n Targ Ret Spend :', (format(tar_ret_spend, ',.2f')),
'\n Net Ret Spend :', (format(net_ret_spend, ',.2f')),
'\n Ret Pre-tax Spend :', (format(ret_pre_tax_spend, ',.2f')),
'\n Taxes :', (format(taxes, ',.2f')),
'\n End Bal :', (format(end_bal, ',.2f')))
#============================================================================
# test function
out_file = open("scenario_out.txt","w") # set up the file object to write to
file_save_flow(save_to_file = True,
file_object = out_file,
scen_year = 0,
age = 60,
s_bal = 100000,
bal_pv = 100000,
inv_gains = 1000,
ann_savings = 1000,
ss_payment = 1000,
major_inc = 1000,
major_exp = 1000,
tax_rate = 0.15,
tar_ret_spend = 50000,
net_ret_spend = 40000,
ret_pre_tax_spend = 60000,
taxes = 10000,
end_bal = 120000
)
out_file.close()
in_file = open("scenario_out.txt","r") # read back the contents saved to the file
print(in_file.read())
in_file.close()
I've tied some bool variable to use as a flag , but still no luck.
CodePudding user response：
At the moment, you're just printing your output to the console, rather than actually saving it to the file.
You probably want something like
if save_to_file == True:
output = (
' Year : ' str(scen_year)
'\n Age : ' str(age)
'\n Start Bal : ' (format(s_bal, ',.2f'))
'\n Start Bal PV : ' (format(bal_pv, ',.2f'))
'\n Invest Gains : ' (format(inv_gains, ',.2f'))
'\n Ann Savings : ' (format(ann_savings,',.2f'))
'\n SS Payment : ' (format(ss_payment, ',.2f'))
'\n Major Inc : ' (format(major_inc, ',.2f'))
'\n Major Exp : ' (format(major_exp, ',.2f'))
'\n Tax Rate : ' (format(tax_rate, '.2%'))
'\n Targ Ret Spend : ' (format(tar_ret_spend, ',.2f'))
'\n Net Ret Spend : ' (format(net_ret_spend, ',.2f'))
'\n Ret Pre-tax Spend : ' (format(ret_pre_tax_spend, ',.2f'))
'\n Taxes : ' (format(taxes, ',.2f'))
'\n End Bal : ' (format(end_bal, ',.2f'))
)
file_object.write(output)
This creates a big string of your output data, then writes it to your file object.
CodePudding user response：
If you remove all the fluff, your code looks exactly like this:
def file_save_flow(save_to_file, file_object, data):
if save_to_file == True:
print('Data: ', data)
out_file = open("scenario_out.txt", "w")
file_save_flow(save_to_file=True, file_object=out_file, data='data')
out_file.close()
in_file = open("scenario_out.txt", "r")
print(in_file.read())
in_file.close()
From that, it's immediately clear that your function does only one thing: it prints something if save_to_file is True and it prints nothing otherwise. It doesn't do anything with file_object.
So, although you create and open a file and pass the file handle to your function, you don't actually use it in the print() statement.
This would work:
def file_save_flow(save_to_file, file_object, data):
if save_to_file == True:
print('Data: ', data, file=file_object)
else:
print('Data: ', data)
Or, to avoiding repeating yourself:
def file_save_flow(save_to_file, file_object, data):
print('Data: ', data, file=file_object if save_to_file else None)