A summary of common methods for python strings

value = "wangdianchao"
# Convert to uppercase
big_value = ()
print(big_value)
# Convert to lowercase
small_value = big_value.lower()
print(small_value)

num = input("Input content:")
# Determine if an input string can be converted to a number
flag = ()
print(flag)

user = input("Please enter user name:")
# Remove spaces from the right side of the string
new_user = ()
print(new_user)
user = input("Please enter user name:")
# Remove spaces from the left side of the string
new_user = ()
print(new_user)
user = input("Please enter user name:")# Remove spaces or newlines on both sides of a stringnew_user = ()print(new_user)

message = input("Please enter a message:")
# Replace characters in the string (replace the word "moncler" with "**" in the input message)
data = ('Grandpa','**')
print(data)

message = input("Please enter a message:")
# Replace only the first character in the string
data = ('Grandpa','**'，1)
print(data)

message = input("Please enter a message:")
# Replace the first two characters in a string
data = ('Grandpa','**'，2)
print(data)

message = "As the early morning rays of sunlight reflected through the gaps in the curtains on sleeping faces, slightly opened eyes gazed hazily at everything around them as a new day crept in."
# Cut strings to specific characters
data = ('，')
print(data)

message = "As the early morning rays of sunlight reflected through the gaps in the curtains on sleeping faces, slightly opened eyes gazed hazily at everything around them as a new day crept in."
# Cut the string 1 time based on specific characters
data = ('，',1)
print(data)

message = "As the early morning rays of sunlight reflected through the gaps in the curtains on sleeping faces, slightly opened eyes gazed hazily at everything around them as a new day crept in."
# Cut the string 1 time from the right side according to a specific character cut
data = ('，',1)
print(data)

str = "this is string example....wow!!!"
# The Python startswith() method is used to check whether a string begins with the specified substring, returning True if it does and False otherwise.
print(('this'))
# 2 is an optional parameter used to set the starting position for string detection.
# 4 is an optional parameter to set the end position of the string detection.
print(('is', 2, 4))
print(('this', 2, 4))

str = "this is string example....wow!!!"
suffix = "wow!!!"
# Determine whether the string ends with the specified suffix, if it ends with the specified suffix return True, otherwise return False.
print((suffix))
print((suffix, 20))
suffix = "is"
# 2 indicates the start position in the string
# 4 indicates the end position in the string
print((suffix,2,4))
print((suffix,2,6))

str = "website name：{name}, address {url}"
# Format the characters in the above string {} into the desired characters
print((name="Baidu.", url=))

str = "this is string example....wow!!!"
# Change string encoding format
print(('utf-8'))

str = "-"
seq = ("a", "b", "c") # The elements in the string sequence must be strings
# Generate a new string by concatenating the elements of the sequence seq with the str string.
print((seq))

data = "Wang Tsuen-chao
# Convert strings to binary
new_data = ('utf-8')
# Convert binary codes to strings
yhf = new_data.decode('utf-8')
print(yhf)