In [1]:
s = 'I am Sam'
In [2]:
print('Sam' in s)
In [3]:
print('sam' in s)
In [4]:
print('I' in s and 'Sam' in s)
In [5]:
s = 'I am Sam'
In [6]:
print(s.find('Sam'))
In [7]:
print(s.find('XXX'))
In [8]:
print(s.find('am'))
In [9]:
print(s.find('am', 3))
In [10]:
print(s.find('am', 3, 5))
In [11]:
print(s.rfind('am'))
In [12]:
print(s.rfind('XXX'))
In [13]:
print(s.rfind('am', 2))
In [14]:
print(s.rfind('am', 2, 5))
In [15]:
print(s.index('am'))
In [16]:
# print(s.index('XXX'))
# ValueError: substring not found
In [17]:
print(s.rindex('am'))
In [18]:
# print(s.rindex('XXX'))
# ValueError: substring not found
In [19]:
s = 'I am Sam'
In [20]:
print(s.count('am'))
In [21]:
print(s.count('XXX'))
In [22]:
print(s.count('am', 2, 4))
In [23]:
s = 'aaaa'
In [24]:
print(s.count('aa'))
In [25]:
s = 'I am Sam'
In [26]:
l = s.split()
print(l)
In [27]:
print(l.count('am'))
In [28]:
s = 'I am Sam'
In [29]:
print(s.upper())
In [30]:
print(s.lower())
In [31]:
print('sam' in s)
In [32]:
print('sam' in s.lower())
In [33]:
print(s.find('sam'))
In [34]:
print(s.lower().find('sam'))
In [35]:
print(s.count('sam'))
In [36]:
print(s.lower().count('sam'))
In [37]:
s = '私はSam'
In [38]:
print(s.lower())
In [39]:
print(s.upper())