[Python] python basics: can someone help me understand processing one file vs processing all...

This will output all csv files from the directory, but only show one of the csv dataframes.

OUTPUT_PATH = "./static/output/"
FILE_LIST = glob.glob("./static/*.json")
def all_data():
for fname in FILE_LIST:
i = open(fname, "r")
lst = []
lst.append(fname)
file_data = json.loads(i.read())
data = {"annual": {}}
....processing stuff here.....
df = pd.DataFrame(data)
df.to_csv(OUTPUT_PATH + fname.split("/" [-1].replace(".json",".csv"))
return df
all_data()
print(all_data())


This will print all the dataframes:

for fname in FILE_LIST:
i = open(fname, "r")
lst = []
lst.append(fname)
file_data = json.loads(i.read())
data = {"annual": {}}
....processing stuff here.....
df = pd.DataFrame(data)
print(df)


how can i use the first example to show me all the dataframes for me to further work on? I also tried concat them together, but it still just prints one dataframe.

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