python string append instance

Append a 1-character to the string through an for loop:

Method 1:

string = ''
str=u" Append character "
for i in range(len(str)):
  string+=str[i]
print string

Display results:

Append character

Method 2:

string = []
str=u"1234"
for i in range(len(str)):
  string.append(str[i])
print string

Display results:

[u'1', u'2', u'3', u'4']