Python global variables

Python access global variable

globvar = 0

def set_globvar_to_one():
    global globvar    # Needed to modify global copy of globvar
    globvar = 1

def print_globvar():
    print(globvar)     # No need for global declaration to read value of globvar

set_globvar_to_one()
print_globvar()       # Prints 1

Source: stackoverflow.com

Global in python

a = 'this is a global variable'
def yourFunction(arg):
    #you need to declare a global variable, otherwise an error
    global a
    return a.split(' ')

Python local variables

'''Local variables are those that are defined in a block '''
a = 1 #This is NOT a local variable, this is a global variable
def add():
  b = 1 #This IS a local variable
  print(b)
add()
#If we tried to print(b) outside of the add() function, we would get an error

Python global variables

#### A_FILE.PY
a_global_variable = "Hello"
####sys.path.append(".")

##### B_FILE.PY
import a_file

output = a_file.a_global_variable

print(output)
------> Hello

Similar codes

1 vote319 views1 answer
New column with age interval pandas
Python
0 vote337 views1 answer
How to Set Axis Range (xlim, ylim) in Matplotlib
Python
21 votes339 views1 answer
Python remove last characters from string
Python
128 votes347 views5 answers
Randint
Python
3 votes357 views1 answer
Frozen
Python
6 votes369 views5 answers
How to count unique values in a column dataframe in python
Python
1 vote333 views1 answer
Datetime not defined python
Python
12 votes365 views6 answers
Set python 3 as default mac
Python
7 votes333 views3 answers
Pandas empty dataframe with column names
Python
0 vote342 views3 answers
Pandas to latex
Python