dynamically create variables' names in python

[Gribouillis]

Here are four ways to access data symbolically in python, the two first being the more common

1) Using a dictionary

data = {}
data['df_2001'] = "spam"    # create, update
print(data['df_2001'])      # read
del data['df_2001']         # delete

2) Using a class instance

class Data:
    pass
data = Data()
data.df_2001 = "spam"    # create, update
print(data.df_2001)      # read
del data.df_2001         # delete
setattr(data, "df_2001", "ham")   # create, update
getattr(data, "df_2001")    # read
delattr(data, "df_2001")    # delete

3) Using directly a class

class data:
    pass
data.df_2001 = "spam"    # create, update
print(data.df_2001)      # read
del data.df_2001         # delete
setattr(data, "df_2001", "ham")   # create, update
getattr(data, "df_2001")    # read
delattr(data, "df_2001")    # delete

4) Creating a global variable (usually frowned upon as stated above)

globals()["df_2001"] = "spam"   # create, update
print(df_2001)   # read
del df_2001      # delete
df_2001 = "ham"    # create, update
globals()["df_2001"] # read
del globals()["df_2001"]   # delete